Having that two-goal cushion back has given Pompey a spring in their step.

They're moving the ball around neatly and Lincoln are chasing shadows.

Tom Hamer is booked for the home side.

A debut for Norwich for Anthony Musaba.

He replaces Andre Brooks.

Michael Hortin
Sports Editor, BBC Radio Lincolnshire

Lincoln have not really got going in this second half, in truth. We know that this season the target will be trying to better that of third from bottom. It is a feeling some won't be used to.

Another change for the visitors as Dutchman Gibson Yah is handed his debut by Michael Skubala and Sam Greenwood also comes on with Scott Twine and Joe Williams making way.

Off comes the double goalscorer Tairyk Arconte for Millwall.

Zak Lovelace will have 20 minutes to run around a bit.

Lee Camp
Former West Bromwich Albion and Birmingham goalkeeper on BBC Radio WM

The momentum of the game has completely changed. There has been so impact from the Bristol City changes and the Blues are looking good.

Lincoln midfielder Tom Bayliss is booked about a minute after coming on after Abu Kamara nutmegs him.

Two more change for the home side.

On come Tom Bayliss and Rob Street for Igor Varfolomeev and Dom Jefferies.

Forward Street will give the home side even more of an aerial threat.

Just feels like the tide has turned a little after that purple patch for the Robins and it's Blues on the front foot now.

Brilliant defending from Joe Williams to prevent Jay Stansfield getting on the end of a knock-down at the back post.

Blues have a corner, and new arrival Tomi Horvat concedes another... but its poor and cleared at the near post.

Ed Hadwin
Commentator on BBC Radio Bristol

It looks like Birmingham have tweaked their formation with their substitutions, trying to change the game. Good attacking changes from the Robins as well, They are definitely going for the win.

Norwich bring on Ruairi McConville for Oscar Schwartau following Jose Cordoba's red card.

This might be about damage limitation for Norwich now.

Lincoln win a corner that is smuggled semi-clear before Reeco Hackett swings it back in from the Imps' right.

Ben House gets his head on it but no power.

Dom Ballard and Tomi Horvat are coming on for the Robins as Jed Wallace and Lorent Tolaj are heading off.

Tolaj has missed a couple of sitters, as good as his general hold-up play has been.

Norwich's afternoon gets worse.

A second yellow card for Jose Cordoba and he has to walk the plank.

Game over?

Home keeper George Wickens is sharply off his line to stop Colby Bishop poking past him.

Josh Murphy then goes for goal from a long, long way out and it goes over.

Almost an immediate impact from one of the Norwich replacements as Papa Amadou Diallo forces a decent save out of Lukas Jensen.

Good reactions from the Millwall goalkeeper who has been a spectator for much of the game.

The groans are growing at St Andrew's as Blues struggle to find a forward pass.

Chris Davies has seen enough and is sending on Demarai Gray and Patrick Roberts.

Paik Seung-Ho and Carlos Vicente are the ones to make way. Quiet days for them.

Jay Stansfield is going to move more central, which will help his influence on the game.

The second Millwall goal brings three changes for Norwich.

Jack Stacey, Pelle Mattsson and Papa Amadou Diallo are on.

Kellen Fisher, Sam Field and Anis Ben Slimane get the hook.

Horse, stable door, bolted?

The away side go to their bench.

Rocco Shein and goalscorer Ryan Kavuma-McQueen go off and on come Ebou Adams and Josh Murphy.