Napoli have reportedly turned down a €2.5m Besiktas offer for Miguel Angel Britos, as Watford are also interested.
The Uruguayan defender has been at the Stadio San Paolo since July 2011.
According to Sky Sport Italia, the Partenopei rejected an initial proposal from Turkish side Besiktas worth €2.5m.
While Besiktas may well raise their offer over the next few days, Premier League team Watford are also known to be tracking his progress.
The 29-year-old made 37 competitive club appearances for Napoli this season, scoring one goal.