The news was broken by The Athletic on Friday last week and confirmed by a Premier League statement on Tuesday, just hours before England's win over Czech Republic - but the story has now further developed, with City lodging an appeal against the verdict.
During his news conference before Saturday's Nations League match against Croatia, Tuchel was asked whether the news is impacting the camp.
"I guess so," he said. "We had some time off between the matches and it is a big subject. Everyone speaks about it, so there is no other voice needed. I am glad to be not that voice. No-one needs my half knowledge on the topic.
"Of course, the players talk about it. City players talk about it. We talk with them but only briefly. They are ready to go tomorrow. But, of course, it's a big topic in the camp."
City defender Nico O'Reilly has returned to the club for treatment on an injury, but club-mates Elliot Anderson and Marc Guehi are likely to feature on Saturday, with the Tuchel saying the latter is "very likely to start".
Without definitive clarity on what sanctions the Premier League will impose, pending the appeal Manchester City have lodged, there is uncertainty over their ability to retain players, renew contracts and make transfers.
Put simply: will players want to join and will the current players want to stay?
The general train of thought is that any drop down the leagues will result in a mass exodus and that players will consider their futures at Etihad Stadium, at the very least.
The reaction from current members of the Manchester City squad varies depending on who you speak to. Sources close to the first team have told BBC Sport that there is certainly a significant level of concern as to how they will be affected.
For those players who decide they don't want to drop down the divisions, should it come to that, the process of leaving is unlikely to be straightforward.
Given how much their players are worth, in terms of wages and general value in the market, you would imagine the club are unlikely to accept being undercut.
BBC Sport also understands that the majority of the players do not have relegation clauses in their current contracts, which also plays into the club's hands.
It is also understood that the players' contracts are fully guaranteed, meaning they would not be required to take percentage pay cuts if the club loses its top-flight status, but maintaining one of the highest wage bills in the world will become harder without Premier League-level income.
Parachute money could ease those concerns, but there are no guarantees the club would be entitled to those payments if they are demoted.
However, it is unlikely Manchester City will roll over and let disillusioned players depart without suitable offers because, ultimately, they can ride the storm financially.
They are also big payers and other clubs may not be as willing to meet similar wage demands. One agent told BBC Sport: "Some players want medals, all players want money."
Any deals that include exit strategies, if the club fall out of the Premier League, would have to be negotiated as new contracts as well - but a number of agents, who spoke to BBC Sport, believe the players will be advised to wait for clarity on the punishments before even considering opening talks.
It is also important to note that Manchester City's potential challenges with player contracts come at the same time as Fifa's plans to introduce new rules that state every deal signed on 1 January 2027 or after must include a release clause.
Gossip: Gvardiol chose to remain at Man City amid Barca interestpublished at 07:36 BST
07:36 BST
Barcelona made an enquiry about defender Josko Gvardiol last season but it was clear he did not want to leave Manchester City. (Mundo Deportivo - in Spanish), external
'Stay together' - Kinkladzepublished at 19:08 BST 1 October
19:08 BST 1 October
Image source, Getty Images
Ex-Manchester City midfielder Giorgi Kinkladze, who played for the club from 1995 to 1998, wrote on X: "Manchester City will always be part of my heart. I arrived at Maine Road in 1995 and lived through some very difficult days with this club.
"Relegation, uncertainty, seasons when nothing went our way. But one thing never changed: the supporters stood by City every single week.
"Today there is a lot of noise around the club. I'm not here to talk about courtrooms. I'm here to say that this club, its people and its fans have been through storms before, and they always came back stronger.
Have the 115 charges 'tainted' Guardiola's achievements?published at 16:10 BST 1 October
16:10 BST 1 October
Image source, Getty Images
"The modern Manchester City doesn't really exist without the way the club has been operating," says The Athletic's James Horncastle - but Spanish journalist Guillem Balague believes a guilty verdict shouldn't "taint" Pep Guardiola's achievements.
The 55-year-old won 17 major trophies during his 10 years at Etihad Stadium, including six Premier League titles and a Champions League.
"If there was evidence he participated in any wrongdoing it would definitely be examined, but there is zero evidence of that," Balague said on BBC Radio 5 Live's Euro Leagues podcast. "A finding about Manchester City isn't a finding about Pep Guardiola.
"You can question the club's behaviour without pretending that everything he did as a manager is fraudulent. You can recognise what he achieved without defending the club. In my opinion, these aren't contradictory positions. In my eyes, his work should not be tainted by this.
"He asked the lawyers and Khaldoon Al Mubarak many times if there was anything wrong - and, in different ways, they all told him there is nothing wrong. He can only go about his business after that.
"If you look at how much money he spent compared to others, Manchester City were the fourth net-spending Premier League club across the 10 years he managed them.
"People can say as often as they want that he is a cheat or a fraud, but they are only trying to mix the behaviour of a club - who are part of an ongoing process, it has to be said - with the world of a manager who reached extraordinary heights with a team that wasn't guaranteed to reach them."
However, Horncastle said: "I disagree. The players he got in were already being talked about as being subject to interest from the very best clubs around the world - and Manchester City were able to afford both their fees and their salaries.
"If you look at the independent commission's findings, the club circumvented the Premier League's rules in this way with the 'disguised funding scheme' that was elaborated on from the start of 2010.
"In my opinion, the modern Manchester City doesn't really exist without the way the club has been operating."
Meanwhile, City youngster Matty Henderson-Hall been added to the England Under-21s squad as a training player by Lee Carsley, before European Under-21 Championship against Slovakia and Republic of Ireland.
While the 115 charges relate to a period between 2009-10 and 2017-18, the story carries a "Catalan implication" as the timeline overlaps with the beginning of Pep Guardiola's time as manager.
City continue to deny any wrongdoing and have until Friday to submit an appeal.
Balague told BBC Radio 5 Live's Euro Leagues podcast: "Given it is the international break, after you stop talking about Lamine Yamal and Spain's 40-game unbeaten run, what else is there to talk about?
"Of course it is a story which has a Catalan implication, but I feel like Spain is receiving a filtered version of everything that has been disclosed in England.
"But when it goes into the realms of debate over here, it just goes into the trenches.
"The anti-Guardiola people are saying: 'I told you so. There's no way they could have won that much unless they had cheated.' The pro-Guardiola people are saying: 'You cannot mix what the club has supposedly done with what he achieved there.'
"I wouldn't say it has become a story that is opening news bulletins as yet, but it is certainly a story that everybody is aware of in Spain."
Elsewhere, BBC Radio Manchester has been hosting a debate on the guilty verdict, with City fan Rachel and Manchester United supporter Joe sharing their thoughts on the situation.
Haaland 'focused' on Norway after verdictpublished at 09:43 BST 1 October
09:43 BST 1 October
Chris Wathan BBC Sport Wales
Image source, Getty Images
Erling Haaland has been unaffected by the "sham contract" verdict against Manchester City, according to the Norway camp he's been with since the news broke.
Haaland will play for the first time since the Premier League's confirmation of City's financial rule breaches when Norway take on Wales in Cardiff on Thursday (19:45 BST).
The 26-year-old was kept away from the media before and after Norway's Nations League defeat by Portugal on Sunday after reports of City's guilty verdict first emerged.
As expected, Haaland was not put in front of the cameras as the World Cup quarter-finalists arrived in Wales amid headlines over his club and what next for the former champions, who continue to deny any wrongdoing.
He trained as normal at Cardiff City Stadium on Wednesday evening, with Brentford defender Kristoffer Ajer saying Haaland had been "no different" since the news broke.
"He's been exactly the way he's always the same with the national team," said Ajer.
"He's truly focused on the upcoming games. I think he's trying to do the same as everyone else, wait and see what the outcome is - but right now the main focus is Wales. That's clearly been his way of doing it."
Manager Stale Solbakken attempted to deflect questions, tersely saying Haaland was "very good" and "scoring goals" before admitting he did miss one chance against Portugal he would normally have finished.
But asked if he had to speak to the forward because of the extra focus, Solbakken replied: "What we speak about is between him and me."
Man City sponsor Etihad Airways considers legal actionpublished at 08:46 BST 1 October
08:46 BST 1 October
Dan Roan Sports editor
Image source, Getty Images
Manchester City's club sponsor Etihad Airways has said it is considering legal action against the Premier League.
In a statement, the United Arab Emirates-based airline said it "categorically rejects any finding, conclusion or implication that suggests the airline has ever been involved in improper commercial arrangements".
It added: "The Premier League's public communication of the commission's findings, following a period of selective leaks and reporting, has further created damaging implications for Etihad despite the airline not being named in the redacted published findings."
Etihad, City's main sponsor since 2009, also said it was given no opportunity to engage in a process that now reflects "adversely on the airline".
The statement added: "Etihad is deeply concerned by the way this matter has been communicated publicly.
"The lack of clarity and transparency, together with the selective disclosure of information, has created damaging implications for Etihad despite the airline not being named in the published decision.
"The Premier League must take responsibility for the consequences of the way in which these findings have been presented.
"Etihad will seek the relevant legal counsel on the options and recourse available to protect its interests."
The Premier League declined to comment when contacted by BBC Sport.
Gossip: European giants eye Haaland and Fodenpublished at 07:34 BST 1 October
07:34 BST 1 October
Real Madrid and Barcelona have both been monitoring Manchester City forward Erling Haaland and will be ready to move if the opportunity arises. (Sun), external
German giants Bayern Munichwould move for midfielder Phil Foden if he becomes available. (Teamtalk), external
When will the charges be resolved? What is the most likely punishment?published at 18:19 BST 30 September
18:19 BST 30 September
Media caption,
Football finance expert Kieran Magiure, has been answering your questions after Manchester City were found guilty of all charges related to breaches of financial rules.
Gary: Is there any chance this could be resolved by the end of the season?
Kieran: There is a very high chance it will be resolved by the end of the season. Because if it is not, we could end up in another situation very similar to that of Burnley and Everton where a club could be relegated and Manchester City are not given a deduction. And next season, a club that finished in 18th could say had that deduction been applied earlier, we wouldn't have been relegated. So that would add to the complications.
Certainly looking at the Premier League's press release itself, it does seem that it is very keen to resolve it as quickly as possible. If you take a look at the length of time that it took the commissions in respect to Nottingham Forest and Everton, once they have heard the evidence, applying the sanctions is the quickest part. It's listening to evidence that is the torturous process.
Dappy: Based on everything you read, what is the most likely punishment going to be for Manchester City?
Kieran: I agree that it could be a very hefty points deduction and a transfer embargo at the very least. On top of that, I believe there will be a very significant financial penalty added into the equation. The logic behind having a transfer embargo is that it then becomes a multi-season issue.
If we go back to 2013 when City were in breach of Uefa rules, they had a transfer ban, wage and squad caps, it did impact the club in the subsequent season.
Rehan: If Manchester City get a huge fine, what would the FA do with that money? Where would it go?
Kieran: It would be shared by the Premier League clubs, including Manchester City. And it will be offset against the league's legal bill. Discussions with lawyers suggest they think City could be liable for about two-thirds to three-quarters of Premier League's legal costs, which is estimated to be in the region of £50-60m.
The disguised funding schemepublished at 18:14 BST 30 September
18:14 BST 30 September
Dale Johnson Football issues correspondent
Image source, Getty Images
The independent commission's ruling shows how Manchester City owners Abu Dhabi United Group were also topping up the value of deals.
The so-called Disguised Funding Scheme is the central plank in a series of charges that Manchester City have been found guilty of by the Premier League.
This scheme managed to hide more than £830m of sponsorship funding, while other devices hid £90m in expenses.
In early 2010, Manchester City took the first steps to get the additional funding into the club.
The club would enter into sponsorship agreements which were record amounts and were significantly above fair market value, something referred to as the 'disguised funding scheme'.
This is how it worked, according to the ruling:
The sponsorship deals were split into two parts: a base fee and a tagged sum.
The sponsors would pay the base fee.
The club's owners would pay the tagged sum.
Ergo, the sponsors, would not have to pay the full value of the contract.
The club's owners would pay the vast majority, which enabled them to invest in players.
This, the document states, "gave the misleading impression to third parties in its financial statements and any required FFP returns that its commercial revenues from sponsorship agreements were far, far greater than was in fact the case".
But Manchester City also knew they had to be nimble. From time to time, the 'disguised funding scheme' would be tweaked to "assist with continued concealment" and "reduce the likelihood of difficult questions being asked".
What did this all mean in reality?
Commercial income from sponsors totalled £949.94m in the seasons from 2009-10 to 2017-18.
The ruling says only £119.25m represented base fees. A total of £830.69m represented tagged sums - the amount paid by the club's owners.
Manchester City have denied the claims and they say the Premier League has misunderstood the sponsorship agreements. However, the panel said it "rejected that explanation as untrue".
It said it was "concocted well after the event in an attempt to obscure and conceal the realities of the disguised funding scheme".
An example given of the 'disguised funding scheme' in action: plugging an unexpected shortfall in May 2013.
Less than a week before the end of that 2012-13 financial year, the club knew they were £9.9m short of complying with Uefa's financial rules.
In a matter of days, without sponsors even being approached, a number of modified sponsor agreements were generated which increased recorded sponsorship fees to pay bonuses for events that had already taken place and to pay for a US tour.
How powerful was Man City's transfer spending between 2009 and 2018?published at 18:10 BST 30 September
18:10 BST 30 September
Daniel Austin BBC Sport senior journalist
Image source, Getty Images
Manchester City spent about £1.2bn on new players in the transfer windows between summer 2009 and January 2018.
In that time, the club won seven major trophies - three Premier Leagues, one FA Cup and three EFL Cups - having previously gone without a significant honour since 1970.
The players they purchased during that time included some of the world's best. Multiple were signed for figures in the tens of millions and made a huge contribution to the club's consistent success.
The graphic below demonstrates how much Manchester City spent each summer across the whole time period and contrasts it with the amount of money that the commission determined had been falsely pumped into the club by its owners, under the guise of sponsorship income.
The club did not only generate revenue from sponsorship funds in that time. Income is spent on many things other than transfers, including player wages, utilities, insurance, infrastructure, marketing, foundations and more.
But the figures underline the fact that Manchester City simply wouldn't have been able to purchase the quantity and quality of players they signed during their era of domination had they not been conducting what the commission described as a "concerted campaign to falsify" their financial accounts.
If their financial power had been slashed by the extra £830m the commission says they falsely added to their books, their transfer spend would surely have been massively reduced.
Chop the amount in half, say, and maybe they would have only brought in half the amount of players or the same amount of players just heavily reduced in quality.
That potentially means no Sergio Aguero, David Silva, Yaya Toure or Kevin de Bruyne, all of whom were key cogs in the club's trophy-winning machine.
Would those successes have been achieved had the rule breaking not been going on in tandem? And what would the impact have been on all the other clubs who have played in the Premier League during that time?
Nobody will ever know because the seasons cannot be replayed.
The era provided the foundation for Manchester City's ongoing success too, meaning more trophies and TV income, and the chaos of the situation has also unleashed doubt about the present and future.