Lille defender Isaac Cossier is part of the squad for the 2026/27 Ligue 1 season. He was born on 30 November 2006.
Cossier began his senior career at Lille in 2025, and he has also played for Le Mans.
Cossier’s senior club career, which began in 2025/26, has so far brought 29 appearances and 1 goals for 2 clubs. So far in 2026/27 he has made 1 appearance for Lille. The full season-by-season record is in the Stats section of this profile.