Derby County midfielder James Bailey is set to be out of action for three months with an ankle injury.
The 23-year-old suffered the injury in training, with a scan confirming he has a small fracture of the talus bone in his ankle, as well as ligament damage.
Physio Neil Sullivan told the Derby County website: "James needs to allow the bone to heal for four weeks before he can fully weight bear again.
"Then he can progess with his rehabilitation work."
Bailey, who joined Derby from Crewe Alexandra in May last year, had started the opening five games of the season.
Meanwhile, goalkeeper Frank Fielding will serve a one-match ban following his sending off in Saturday's victory over local-rivals Nottingham Forest.
The 23-year-old will miss Derby's next match with Millwall at Pride Park on Saturday.