Eidur Gudjohnsen believes his former Iceland team-mate Gylfi Sigurdsson could be tempted to leave Swansea if a big club comes in for him this summer.
"Gylfi has had a really good season," he told Press Association Sport. "He's obviously been one of the most important players in keeping Swansea in the Premier League.
"He's got tremendous quality, but he can still improve on certain things whether he stays or go. He's come to an age where he might want to try his luck at a bigger club or even European football. It's all down to him. If he's happy where he is, he should stay."