Matanović played for the youth team of Harburger TB until 2010, when he moved to FC St. Pauli's youth academy.[1] He made his professional debut for St. Pauli's senior team in the 2. Bundesliga on 27 November 2020, coming on as a substitute in the 87th minute for Rico Benatelli against VfL Osnabrück. The home match finished as a 1–0 loss.[3]
In April 2022, he declared his intention to represent Croatia internationally.[6]
Matanović was called up to the senior Croatia national team for the first time for the Nations League games against Portugal and Poland in September 2024.[7] He debuted on 5 September 2024 against Portugal at Estádio da Luz. He substituted Martin Baturina in the 61st minute, Portugal won 2–1.[8]
Career statistics
Club
As of match played 21 December 2024
Appearances and goals by club, season and competition