Peterborough striker Dave Hibbert could miss the rest of the season after dislocating his knee cap.
Defender Nana Ofori-Twumasi and winger Tommy Rowe (both groin) will definitely both be missing.
Peterborough United boss Gary Johnson told BBC Radio Cambridgeshire: "People keep talking about our lack of big game mentality but we've beaten the likes of Huddersfield and Carlisle.
"It's the teams at the bottom we've struggled against, so if we're not beating the teams at the top, I'm not too sure where our points have actually come from.
"What we need to learn to do is make sure that when we're not on song, we get a draw and don't lose or get well beaten."
Source: BBC Sport
Source: BBC Sport