Poland striker Maciej Zurawski has been urged to quit Celtic.
Zurawski has been urged by his international boss Leo Beenhakker to secure a starting place, and the Dutchman insists the 31-year-old would still feature in his Euro 2008 plans if he goes to play in America.
Beenhakker said: "What matters most is that he plays on a regular basis, the level is not really a problem."