Early career Simić started his youth career at , then moving to
Stuttgarter Kickers in 2016 and local rivals
VfB Stuttgart in 2018.
AC Milan In 2022, Simić was signed by Italian club
AC Milan on a reported €1 million fee, joining the
under-19 Primavera team. During the
2023–24 season, he started featuring for the first team, playing in some summer-friendly games, including those against
Real Madrid and
Juventus. On 17 December 2023, in his
Serie A debut for the
Rossoneri, he scored a goal after coming on as a
substitute in the 24th minute for the injured
Tommaso Pobega, contributing to a 3–0 victory against
Monza.
Anderlecht On 23 July 2024, Simić joined
Belgian Pro League side
Anderlecht on a permanent deal, for a fee reported to be in the region of €3 million, with a 20% sell-on clause in favour of AC Milan; he signed a five-year contract with the Belgian club. ==International career==