Carroll joined late in the transfer window on an incentive-based contract.
The English striker has struggled with injury issues in the past few seasons, especially with his ankles.
But Le Tissier thinks that when he does return, Carroll will galvanise everyone at the club.
"He'll (Bruce) be desperate for Andy Carroll to get somewhere near match fitness, just to have someone there who could possibly lift the crowd," Le Tissier told Sky Sports' Gillette Soccer Saturday.
"An old fan favourite going back there, if he can get him fit and stay fit, he may just be the one player who can make a difference to the atmosphere in the stadium.
"However I agree with Charlie (Nicholas) as it looks like this situation will only be resolved when the owner leaves as there doesn't seem to be any other way out."