Milan are tracking Chelsea winger Danilo Pantic, who is currently on loan at Partizan Belgrade.
According to Mediaset Premium, Rossoneri director Massimiliano Mirabelli is watching his progress carefully ahead of a January offer.
He turns 21 next month and plays primarily on the left wing, but can also do a job on the right or behind the strikers.
Partizan do have an option to buy at the end of the season and he started out at the Serbian club before moving to Chelsea in 2015.
Pantic also had loan spells at Vitesse and SBV Excelsior in the Netherlands.