Ronnie Henry is set to miss up to another six weeks through injury.
The full-back, who has made 30 starts so far this season, picked up a calf injury in his left leg at Luton Town earlier this month.
Scans have revealed a grade two tear meaning that the 33-year-old could be out for the majority of the remainder of the regular season.
Ben Kennedy (hamstring) also missed the win over Portsmouth but could be back in contention for this weekend’s trip to Cambridge United.
Goalkeeper Jamie Jones, who suffered a tibial fracture in the game at Crewe Alexandra on March 25, is now fully weight-bearing and is a few weeks away from full training.
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