The Viola scouting department are already looking for potential recruits, and they have targeted the 22 year old Colombian as one of their main priorities for the summer.
Tuttomercatoweb.com report that Fiorentina will have to challenge English giants Manchester United for Arias, with the Red Devils having already proposed a €8.5 million bid to PSV.
Fiorentina recently had scouts to watch him for Colombia in their recent friendly against Tunisia, and came back greatly impressed by the youngsters performances during the game.
The Dutch club would rather hold on to the talented fullback for one more season, but will accept a bid if it is too good to refuse.
Arias has made 27 appearances for PSV in all competitions this season and has been one of the best performers for the Eredivisie club.