AC Milan have officially confirmed the acquisition of 19-year-old striker Andrej Kostic from Serbian side Fudbalski Klub Partizan.

The Serie A club announced the deal in a statement on Tuesday, March 31, 2026. The Montenegrin international will complete the current season with Partizan before formally joining the Rossoneri on July 1, 2026.

"AC Milan is delighted to announce the signing of Andrej Kostic from Fudbalski Klub Partizan, who will be joining the Club from 1 July 2026. The forward, born in 2007, will be part of the Milan Futuro Project, dedicated to the growth and development of young talents."

According to transfer expert Matteo Moretto, the transfer fee is €3.5m, with the deal including add-ons that could reach a maximum of €4.5m. The agreement also features a sell-on clause for Partizan.

Kostic, a promising centre-forward, arrived in Milan on Sunday to undergo medical tests. He has scored 11 goals in 34 appearances at the club level this season. The young striker made his senior debut for Montenegro less than a year ago, in October 2025.

His agent, Darko Ristic, who also represents Juventus star and reported Milan target Dusan Vlahovic, facilitated the move. Negotiations between Milan and Partizan had been ongoing, with reports of the talks first emerging in December.

Upon his arrival, Kostic will initially be integrated into the Milan Futuro team, the club's project focused on nurturing young talent.