 Following the 2005–06 season, he signed his first professional contract and was promoted the senior team being assigned the number 19 shirt.Samassa made his league debut on the opening match day of the 2006–07 season against Nice starting in a 1–0 victory.In the just the third match of the season, he scored his first career goal as a professional nailing the equaliser in the 53rd minute against Valenciennes.