Centre back Liam Fontaine and midfielder Stephen Pearson (both ankle) and Wales defender Lewin Nyatanga, who broke his nose in Saturday's 2-1 defeat to Bolton, will all be assessed ahead of kick off.
However, striker Jon Stead is not ready to return from a groin injury and captain Cole Skuse underwent surgery on his knee cartilage on Monday, ending his campaign.
City, who have not beaten Birmingham in eight games since a 3-0 victory back in November 1993, could still be relegated even if they are victorious - provided Peterborough or Blackburn are victorious on Tuesday night.
- Sports & Recreation
- Lewin Nyatanga
- Stephen Pearson
- Liam Fontaine
- Jon Stead