At the start of the 2003–04 season – Giuly's last with Monaco – he scored a superb overhead kick during a league match against Lens with an assist from Jérôme Rothen, having suffered an injury that kept him out for a week prior to the game. While the club floundered in the race for the Ligue 1 title, they had a fantastic run in the UEFA Champions League progressing through the group stage (where Giuly scored goals at home to AEK Athens and Deportivo de La Coruña) and making it through to the knockout stage. Here, Monaco eliminated Lokomotiv Moscow, Real Madrid (in which he scored a brace in the second leg) and Chelsea. Giuly captained Monaco in the final, where they lost 3–0 to José Mourinho's Porto. This was a particularly galling defeat for Giuly because he suffered a groin injury early in the match, forcing him to leave the field in the 23rd minute, being replaced by Dado Pršo. Without Giuly, the club's task of winning the final was even more compromised. Even manager Didier Deschamps admitted that losing Giuly was a "big blow" and said, "Giuly's injury was not good news for us – he is a very important player for us on the offensive side." This was Giuly's last appearance for Monaco.