well there is gyan and essien and probably more
Football players play football because they enjoy playing, love football, they were influenced by a friend or family member who plays football, to make money, stay active, and for various other...
George Best
he used to play for panathinaikos fc. he got a transfer somewhere else now. But he is no Greek he is Argentinian.
In theory he could, there would be nothing stopping him, as long as he is a registered player with the club.