Manager Keith Hill has revealed that Calvin Andrew could be out for another four weeks after undergoing a minor operation.
The forward, who has been side-lined since last the middle of last month with a medial ligament problem, had the op on Wednesday.
He joins Matty Lund on the long term injury list. As previously announced, Lund is expected to miss the rest of the season as he continues to undergo rehab following an operation on his dislocated shoulder.