Clarke Carlisle starts his three match suspension tomorrow and it could be a double switch in the centre of defence again with Andre Bikey rated doubtful after returning from international duty with Cameroon. He's still suffering with the rib injury sustained at Millwall. Laws said: "Clarke's absence creates an opportunity for someone else and Leon Cort and Michael Duff, who both played an hour for the reserves midweek, are chomping at the bit."But we still have an issue with Andre. He has been away on international duty and trained with them. He didn't play in the game but he still has a bit of soreness and so we are going to check him out and that could be a late decision."It could yet be a case where we have to change two centre halves and that shows you what football can be like. Just when you think everything is going all right things can change, but whatever happens we are very confident of putting out a good team that can got to Sheffield and win the game."