"He has a long lucrative contract at Roma and we know he has got to go back at the end of the season," he said.
"He is here because he wants to play football and sample living in London and we are glad to have him.
"Vincenzo has scored goals wherever he has been and everybody knows about him.
"He has fitted in very well in the dressing room, the players and the crowd love him and he's every inch a professional in all he does.
"He has not been back to Italy since he arrived and he's going to an interpreter three times a week to learn English."