Milan target further full-backs
Despite signing Urby Emanuelson from Ajax last week, the Rossoneri need UEFA Champions League cover as the Dutchman is not eligible to feature in the European competition.
AC Milan vice-president Adriano Galliani said: "Our negotiations are focused on a left-back that doesn't play in the Italian league. I cannot reveal his nationality but he should be available to play in the Champions League. We need a left-back as an alternative to Luca Antonini considering the injury to Gianluca Zambrotta."
Milan's hopes of signing Italy international Domenico Criscito proved unsuccessful, with Genoa confirming the player will not leave the Luigi Ferraris stadium at least until the summer. The 22-year-old Didac has made 13 league appearances for La Liga side Espanyol this season.