Ethan Mbappé starts for Lille against a Rennes defense that has conceded 19 league goals, joint-worst in 55 years, but he has scored just 2 goals in 9 Ligue 1 appearances this season with no goals in his last 3 matches despite recent availability. Lille's injury absences of key attackers Igamane, Santos, and Ueda increase his role, though his low conversion rate and Lille's recent struggles (1 win in 6) limit upside.