Long-term Nottingham Forest absentees Moussa Niakhate and Omar Richards remain in "the latter stages" of rehabilitation as they work their way back from injury.
Centre-back Niakhate has been sidelined with a hamstring problem since August and has suffered a number of setbacks during his recovery. Fellow summer signing Richards, meanwhile, is yet to make his debut for the Reds due to being out with a hairline fracture of the leg.
Head coach Steve Cooper recently said he hoped the two defenders would soon be able to join in full training. And ahead of Wednesday night's Carabao Cup semi-final second leg against Manchester United, he has provided an update.