The tireless Parker has become an integral part of the England team over the past few seasons but could be a huge miss as the tournament edges closer.

Hodgson, who named his squad on Wednesday, is unsure whether Parker will be available, but remains optimistic.

"Scott's had an injection which will probably take a week for us to see if it's been successful or not," Hodgson told reporters.

"He could still miss out, although from what I'm hearing, it won't be a problem. He's very confident.

"We've got until the 29 May to finalise the squad and I may still have a call to make on that one if it's looking dubious, if there is a doubt.

"I'll have that call to make. Do I take the risk and go with a doubt and hope for the best or do I say 'I'm sorry, I've selected you in my 23 players, but now I have to remove you'?

"I'm very confident that won't happen. I'm very optimistic. The doctor spoke to Scott Parker and (Tottenham) on Wednesday so I'm confident, but I can't give a guarantee."

If Parker does miss out, Liverpool midfielder and stand-by Jordan Henderson could take his place for the tournament in Poland and Ukraine.