The forward,who joined City from Norwich, aggrevated his thigh in training on Friday morning and City boss Chris Coleman is gutted to be possibly losing the services of a key player who has fought his way back to fitness after a similar injury last season.
"We had a light training session on Friday and he went to cross the ball but pulled up sharply, we think he has got a tear in the thigh opposite his injury that he had last year",said Chris Coleman to the CT.
"The symptoms look as if they are more than a grade one tear but we arehoping that it is not a grade three. It was obviously bleeding inside and we have had to wait until that dies down before he can get a scan. Fingers crossed it won't be too bad but it does not look good.
"If it is grade one then he will be out for three weeks to a month. If it is a grade two then it is six weeks to two months but if it is a grade three then we could be lookoing at a lot longer than that."