Michael Chopra and Simon Walton are suspended, Kerrea Gilbert and Paul Parry are doubts.
It could be be just too soon for Riccy Scimeca to return and City are still without Glenn Loovens who sits out his last suspended game and Darren Purse who is still a few weeks away.
It will mean a start for Jason Byrne as he partners Steve Thompson up front. Blake could come in as a direct replacement for Walton with Willo Flood and Chris Gunter replacing Parry and Gilbert if they fail make it.
W.B.A will be without Curtis Davies after the defender was sent off on the weekend.
Their danger players are Jason Koumas, and the strikers Diomansy Kamara and Kevin Phillips.