Norwich City are again without striker Nelson Oliveira, who serves the last game of a three-match suspension.
Defender Steven Whittaker will be assessed after missing Saturday's 3-1 win at home to Wolves with a hamstring problem.
Birmingham boss Gianfranco Zola may opt to use several new signings as he again seeks his first victory.
Full-backs Cheick Keita and Emilio Nsue and winger Kerim Frei, a late sub at Blackburn last week, are in the frame.
Defender Dan Scarr also signed in midweek from non-league neighbours Stourbridge, but is unlikely to go straight into the first team.