Mile Jedinak and Keinan Davis are both doubts for the clash with Millwall – while James Chester definitely misses out.
Jedinak was absent in the 3-3 draw with Preston due to a hamstring issue.
Davis is battling back from the hip problem that has plagued him all season.
Both are doubts for the clash at The Den on Saturday.
Chester, meanwhile, will serve a one-game ban at Millwall.
The skipper received a red card in the game with North End and that will rule him out this weekend.