Official: Milan confirm signing of 19-year-old striker Kostic | OneFootball

Milan have confirmed the signing of Andrej Kostic from Fudbalski Klub Partizan, with the 19-year-old joining the Rossoneri on July 1, 2026.

Milan have completed the acquisition of 19-year-old striker Kostic from Partizan, the Serie A giants confirmed in a statement on Tuesday.

The promising centre-forward had long been in talks with the Rossoneri, and Football Italia had already reported on the negotiations in December.

Kostic arrived in Milan on Sunday to undergo medical tests.

His agent, Darko Ristic, is the representative of another Milan target in attack, Juventus star Dusan Vlahovic.

Kostic, a Montenegro international, has 11 goals in 34 appearances at a club level this season. He made his senior Montenegro debut less than a year ago, in October 2025.

MILAN, ITALY – MARCH 08: A general view of the Giuseppe Meazza Stadium San Siro ahead of the Serie A match between AC Milan and Inter at Giuseppe Meazza Stadium on March 08, 2026 in Milan, Italy. (Photo by Marco Luzzani/Getty Images)

Transfer expert Matteo Moretto has reported on X that Milan have paid €3.5m to sign the 19-year-old and will add a maximum of €4.5m in add-ons, plus a sell-on clause, for Partizan.

Kostic will end the season at Partizan and formally join Milan from July 1, 2026.

He will initially be part of the Milan Futuro team.

MILAN, ITALY – MARCH 21: Massimiliano Allegri, Head Coach of AC Milan, reacts during the Serie A match between AC Milan and Torino FC at Giuseppe Meazza Stadium on March 21, 2026 in Milan, Italy. (Photo by Marco Luzzani/Getty Images)

Kostic joins Milan – official statement

“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.”