Bayern Munich winger Arjen Robben looks set to miss Tuesday's Champions League quarter-final first leg clash with Manchester United after picking up an injury during Saturday's shock home defeat to Stuttgart.
The Netherlands international hobbled off the pitch after pulling up in agony when no player was near him.
It was reminiscent of the incident which led to David Beckham sustaining an Achilles injury, although Bayern have hinted that it may only be a calf strain.
"It doesn't look too bad, but he's doubtful for the match against Man Utd," confirmed Bayern manager Louis Van Gaal.
Robben has been in fine form recently but has been dogged by injury for several years during spells with Chelsea and Real Madrid.