Ched Evans faces yet another spell on the sidelines after a flare up of his ankle problem.
The issue, also previously described as a heel injury, has already kept the striker out of action on two separate occasions this season.
Evans, signed last summer and contracted until the end of next season, has played in just 29 of Town’s 44 fixtures.
Boss Gary Caldwell delivered the bad news to fans after Tuesday’s 1-0 defeat at Walsall.
“He felt his ankle again after the game on Saturday,” he said.
“He’s had more injections and he’ll probably be out for the next few games.”
Chesterfield have had good news on two other injury victims however.
Paul McGinn returned to the pitch for 45 minutes with the reserve team on Tuesday and Jon Nolan is due back in training today.