Curtis Fleming has admitted there is still no timeline on George Tanner's return to action and ruled out his recovery in time for the game against Birmingham on March 5.
The full-back is taking part in some light training as he continues his rehabilitation from a hamstring injury picked up in the home defeat to Queens Park Rangers at the end of December.
Manager Nigel Pearson has previously given a two-month timeline for Tanner's recovery, meaning the club were hoping to get him back in action at the beginning of March.