Town will be without Danny Haynes, Moritz Volz and Ben Thatcher for Tuesday's home game against Southampton. Better news is that Iván Campo is back in the squad after missing out with a torn calf muscle since early January.
Volz aggravated his groin injury at Preston on Saturday, Thatcher has an injured foot, while Haynes is continuing his recovery after a hamstring problem.
Physio Matt Byard told the club site that the trio will be looked at again in a few days: "Moritz has aggravated the groin injury and is certainly out of the Southampton game.
"It's settled down a little, but we will reassess it at the end of the week and see where we go from there.
"Ben has a problem with his left foot. He has done some light training and we are hopeful that he will step that up later in the week.
"Danny will train fully on Tuesday and through the rest of the week with the view of being ready for the Wolves game next week."
Skipper Gareth McAuley will be available for the visit of the Saints before serving his one-match against Wolves.