Spurs have previously been linked with a move for the 30-year-old and his agent Andrea D'Amico claims that remains the case.
D'Amico says that a number of clubs are tracking the Juventus frontman.
"I don't like to comment on rumours," D'Amico told Itasport.
"I do know that Vincenzo is tracked by several clubs, including Tottenham, who have been interested in the player for a long time.
"Having said that, nobody has called me directly."