Diego Fabbrini came off in the win with cramp but should be fit while Rob Kiernan is expected to shrug off a tight hamstring.
Jonathan Spector has an Achilles problem and will be assessed ahead of the game but did train on Monday.
Birmingham are 14th in the Sky Bet Championship with five games left for Gary Rowett’s side.
Youngsters John O’Sullivan and Darragh Lenihan will be in Blackburn’s squad again.
The duo, who were both on the bench at the weekend but are yet to start a game for Rovers, were left out of the first leg of the Under-21s’ Premier League Cup clash on Monday night against Southampton so they could make the trip to the midlands with the senior side.
Alex Baptiste (hamstring) remains absent but manager Gary Bowyer is hopeful the Bolton loanee can pull on a Blackburn shirt again before returning to Wanderers, while Josh King is also set to return before the end of the campaign following a similar issue.
Rovers’ injury list is still lengthy and contains Jason Lowe (foot), Grant Hanley (calf), Chris Taylor (groin) and Shane Duffy (knee).