Antoine Benjamin Colassin

Antoine Colassin was born in Charleroi. He came through the youth ranks at RFC Grand-Leez before moving into Charleroi's own academy and then across to Anderlecht, where he made his senior breakthrough and was part of the squad that reached the quarter-finals of the 2019–20 Belgian Cup.

His path since has run through loan spells rather than a settled first-team role. At Zulte Waregem he spent the 2020–21 season out on loan, and a stint at Heerenveen in the Eredivisie followed, where he made 24 league appearances and scored three goals. He also turned out for Anderlecht's reserve side, RSCA Futures, before Anderlecht let him go permanently to Beerschot in August 2024.

That move to Beerschot did not become a long stay. In July 2025, Colassin signed a three-year contract with Charleroi, returning to the club where his career began, for a reported fee of €400,000.

At youth international level, Colassin represented Belgium across three age groups: seven caps and two goals for the under-17s, six caps and three goals for the under-19s, and three caps for the under-21s. He has not won any major senior trophies or individual honours to date.