Ahead of this weekend's clash with Shrewsbury Town, Danny Wilson has confirmed Mark Howard has suffered a setback in his bid to return to full fitness.
The manager confirmed: "Mark (Howard) had a minor setback in the recent U21s fixture with Crewe Alexandra.
"It has put him back about a month and we will monitor that situation carefully in the meantime.
"He had a small reaction to playing, but thankfully it isn't anything too major."
Mark has not featured since limping out of the away fixture at Leyton Orient in October with a thigh problem after playing the first 12 games of the season.