Captain Zander Diamond begins a four-match suspension after the club decided not to appeal against his red card at AFC Wimbledon last weekend.
Ian Sharps, on loan from Rotherham, is ineligible against his parent club and Nathan Stanton is battling to overcome a knee injury.
Manager Gary Rowett has not ruled out making an emergency loan signing but will hope that left-back Damien McCrory can return from an ankle problem. That would allow Aaron Webster to move across to centre-half - if Webster recovers from a calf injury he sustained in training on Tuesday.
Billy Kee also suffered an ankle injury in training this week and is a doubt.
Fellow striker Calvin Zola missed the draw against the Dons and will be assessed while on-loan forward Alex MacDonald was forced off at Kingsmeadow with a dead leg and looks set to miss out.