Coventry City's medical team are to investigate the problem which kept David Bell out of Tuesday night's win against Doncaster Rovers.
Speaking to the CT about the winger who was left off the bench, Aidy Boothroyd said: " He felt something go in his thigh during training.
"We're not sure of the extent of the injury so that's why he wasn't risked and we've got to take a look at that."