Jamie Pitman has told BBC Hereford and Worcester that there is a 40% chance of midfielder Harry Pell starting the game at Gillingham on Saturday.
Pell had a scan on his knee yesterday.
Several others players will also miss the game. Danny Williams is ill, Joe Heath continues to recover from a groin strain, and Stefan Stam has a knee problem.
However Benoit Dalibard will be available after his three match ban and Simon Clist is back in training although it's thought the game might come too soon for him.
Meanwhile Gillingham have revealed that they have covered their pitch since Monday over concerns of freezing temperatures. Head groundsman John Plummer told their official site "Now we just wait and see what tomorrow brings and wait for Saturday, because I don't think anyone really knows how cold it might get."