Phil Parkinson's men find themselves two goals behind going into their semi-final second leg having lost out 3-1 to Millwall at the Coral Windows Stadium last Sunday.
If City are to be successful and book a trip to Wembley, they will have to do it without the services of top scorer James Hanson, who is still sadly sidelined with a calf problem.
Reece Burke does have a chance of featuring against the Lions, however, after returning to training on Thursday following a recent groin injury.
He will be assessed by City's medical staff pre-match to see if he can be passed fit to play.
Billy Clarke is another player who will need checking ahead of Friday night after missing the first leg because of a fractured cheekbone.
For Millwall, the hosts will continue to be without regular right back Mahlon Romeo as he misses a second game due to a recent three-match ban.
Carlos Edwards is expected to remain in Millwall's starting line up after deputising for Romeo at Valley Parade.
Star striker Lee Gregory is a minor doubt for the Lions after coming off early in the second period last weekend.
Shaun Cummings (knee) remains Millwall's only long-term absentee through injury.