Sergiu Bus could be out for up to six weeks following the results of a scan on his groin injury.
Bus, who was injured in the warm-up at Derby on Saturday, had been expected to be sidelined for around three weeks but it has now been confirmed that it could be double that time, which would see him not returning to action until the closing games of the season.
Stuart Gray has also said that he came close to making another loan signing before the Millwall game but that the player’s parent club pulled out of the deal at the 11th hour.