"He's one of three captains that we have now secured who led their teams last season. Dom does the stuff within a game that nobody sees, the work that goes unnoticed but is so important.
"I'm sure he will be a great addition to the group and will add valuable experience".
The club say that following successful rehabilitation they hope Harfield will be able to get back to playing this summer.
"Securing Ollie for next season is hugely important," said manager Scott Davies.
"I know that Ollie is a massive favourite with the fans, and I'm sure that we are all delighted to see him return from a long-term injury.
His dedication and commitment to get back fit has been nothing short of admirable and I genuinely hope that he's back to his best as soon as possible."
Thomas and Ghandour among 12 to leave Aldershotpublished at 12:03 BST 28 April
12:03 BST 28 April
Image source, Getty Images/Shutterstock
Aldershot Town strikers Kwame Thomas and Hady Ghandour are among 12 players who have left the National League club following the end of the 2025-26 season.
Thomas, once of Coventry City and Wrexham, scored seven goals in 37 league appearances this season in what was his second spell at the Recreation Ground.
Ghandour netted five times in 30 league games and departs after three years with the Shots, who finished 21st in the fifth tier and avoided relegation by four points.
Other players to leave who have been at the club since 2023 include defender Olly Scott and midfielders Dejan Tetek, Theo Widdrington and Tyler Frost.
Goalkeepers Coniah Boyce-Clarke, Marcus Dewhurst and Pat Nash, defenders Luke Jenkins and Josh Brooking, and versatile player Matt Penney have also gone.
The club said: "All remaining players are either under contract for the 2026-27 season or in talks to continue at Aldershot Town."