Striker Scott Hogan is a major doubt for Birmingham’s home clash with Sheffield Wednesday.
Hogan, who has scored three goals in four games since joining on loan from Aston Villa, suffered an ankle injury in the second half of last week’s draw with Brentford.
Kerim Mrabti (hamstring) and Jacques Maghoma (quad) are also sidelined.
Maikel Kieftenbeld could feature for the first time this season after recovering from knee ligament damage. The midfielder was an unused substitute against the Bees.
Sheffield Wednesday manager Garry Monk hopes to have defender Morgan Fox available for the trip to St Andrew’s.
Fox has missed the last four games through injury but has returned to training and will be assessed after Friday’s session.
Striker Steven Fletcher has also been back in training this week after missing the last eight games.
Fletcher has been sidelined since sustaining a knee injury in the FA Cup win at Brighton on January 4, but could feature on Saturday.