Andrej Kostić, an 18-year-old Montenegrin and Serbian centre-forward, has reached an agreement with AC Milan. He currently plays for FK Partizan Belgrade, which he joined in July 2025, and has scored 8 goals in 20 appearances in the Super liga Srbije this season. Kostić has 2 caps for Montenegro. His contract with the Serbian club is valid until June 30, 2030, and his current market value is €3.00m, according to Transfermarkt.