Gregucci says City chiefs know all about the Uruguayan star.
"Cavani? There is no need to even see him, the numbers speak for him. He's a player of the highest level that changes all the big teams," said Gregucci.
"The top European teams look at him with great attention, even though I have the impression that he is very fond of Naples.
"City will try an assault on El Matador? Not only City, I think all the big clubs in Europe. But when you make a deal you have to be happy in threes: the team that sells, the one who buys and the player."