Everton midfielder Jack Rodwell appears likely to miss the rest of the season and the chance to make England's squad for Euro 2012.
Rodwell has endured an injury-hit campaign for the Toffees and has been restricted to just 11 starts in the Premier League this season.
He has not played since last month's 3-0 derby defeat at Liverpool and manager David Moyes is now prepared to see out the season without the 21-year-old.
The Toffees want to send him to German specialist Hans Muller-Wohlfahrt for treatment and Moyes does not think he should play at Euro 2012 or the Olympics.
Moyes said: "Jack Rodwell has pulled his hamstring again in training. He trained Saturday morning and felt his hamstring again.
"He had a scan. It's a grade one (tear) which is small. We are trying to send him to Germany for treatment.
"Dr Muller-Wohlfahrt is away this week and because he is the Bayern Munich doctor, he has a very big week next week because of their Champions League semi-final. So trying to get hold of him will be the hardest thing certainly in the short term.
"I would advise him to concentrate on next season because Jack has probably missed six months with hamstring injuries, so we have to get him working on whatever work programme they recommend him to do."
Rodwell forced his way into England contention in the final two games of former coach Fabio Capello's reign last November but has since been plagued by hamstring problems.
He has played just five times in the last five months and was unfit for February's friendly against the Netherlands, when caretaker manager Stuart Pearce took charge.