French centre-back Isaac Cossier, 19, has extended his contract with LOSC until 2030. Isaac Cossier, who turned professional at LOSC in the summer of 2022, returned from a successful loan at Le Mans, where he participated in their promotion to Ligue 1 last season, playing in 24 Ligue 2 matches. According to Transfermarkt, his current market value is €2.50m.