Kamil Zayatte could be out until the New Year after suffering an ankle injury.
Dave Jones said the central defender is likely to be out for between six to eight weeks. Miguel Llera, who replaced Zayatte against Huddersfield, is expected to stay in the side for the trip to his former club, Blackpool, next Saturday.
Roger Johnson finished the Huddersfield game in pain but Jones said it is likely to be nothing worse than a dead leg.