England coach Roy Hodgson has admitted that Theo Walcott's hamstring injury has left the winger doubtful for Tuesday's match against co-hosts Ukraine.

Walcott was forced to leave training early today with the complaint, although at the time it was described as a precautionary measure.

Looking ahead to the Ukraine clash, Hodgson has revealed that he will not make a decision on the 23-year-old until he has consulted with his medical staff.

"Unfortunately he had a slight setback in training," Hodgson told BBC Radio Five Live. "He felt the hamstring that kept him out for so long at the end of the season and which we were slightly concerned about when he came to us.

"We have been lucky nothing has occurred with that but in a little training session today we had to take the precaution of taking him from the field because he felt some tightness there.

"Whether he is a real contender for a starting position will depend upon what the medical people can tell me and how much guarantee they can give me that if I do start him he won't be leaving the field after five minutes, forcing us to have 13 men rather than the 14 I would rather count on."

Walcott was among the goals as England came from behind to beat Sweden 3-2 on Friday night.