The 26 year old Colombian star is attracting attention from Barcelona, Bayern Munich and Manchester United, and is expected to leave the Viola for huge money this summer.
The Sunday Express report that the Red Devils have initiated contact with Fiorentina and this may spark a bidding war between the interested parties.
New United boss Louis van Gaal is prepared to offer €38 million for the flyer, but the Viola are still holding out for a reported €42 million.
Manchester United’s offer may spark Barcelona and Bayern into action, and Fiorentina may be expecting concrete offers soon for the talented winger.