Liverpool and Chelsea have been alerted to Ricardo Quaresma's blow-up with Porto fans.

Quaresma is now being barracked by Porto fans upset with his comments that he is prepared to leave the club.

Chelsea, Liverpool and Atletico Madrid are all chasing the Portugal international and Porto vice-president Fernando Povoas said: "I know that he is happy at Porto. Regarding a possible transfer, we will decide together at the right time."