Caretakers to monitor duo
Lee Carsley and Richard Shaw have two major injury concerns as they take temporary charge of Coventry for their clash with Birmingham.
The new coaching duo have filled the breach left by the sacking of Andy Thorn, and face the Blues with major doubts over John Fleck and Jordan Clarke.
Fleck missed Saturday's 2-2 draw at home to Bury with a hamstring strain which has kept him out of the team since the opening-day draw at Yeovil.
Defender Clarke has also missed the last two matches with a knock picked up in training and will be assessed prior to kick-off.
Long-term absentees Cyrus Christie (knee), Conor Thomas (ankle) and David Bell (hip) remain on the sidelines, while Nathan Cameron (knee) continues to step up his rehabilitation.
Gary McSheffrey, Callum Ball, and Billy Daniels will all be hoping for a return to the first XI after starting in the Sky Blues' first-round victory over Dagenham.