The Turkish league leaders ruthlessly capitalised on the glaring errors of a French backline—one of the leakiest in the competition so far—to clinch a priceless victory after stumbling to defeat in their opening two outings.

The visitors struck within two minutes through Yunus Akgun. While Ancelotti's men turned the scoreline around courtesy of a quickfire brace from French forward Soriba Diaoune, Russian midfielder Aleksey Batrakov pulled Galatasaray level on the stroke of half-time.

A calamitous start and finish to the opening period proved fatal for Lille, who found themselves completely at the mercy of Galatasaray after the restart. In the space of 15 second-half minutes, the Turkish giants dismantled the hosts: Uruguayan midfielder Lucas Torreira saw his strike deflect off Algeria's Nabil Bentaleb to wrong-foot goalkeeper Berke Ozer, before Nigerian hitman Victor Osimhen capped off the rout.

The explosive striker refused to celebrate against the fanbase he once dazzled before moving to Napoli, remaining an unrelenting menace against a disorganised Lille defence.

He emphatically filled the void left by injured star Rafael Leao, firing his side to a well-earned triumph against an opponent that only offered real resistance during the first 45 minutes.

Ancelotti turned to veteran striker Olivier Giroud off the bench, but the tactical tweaks failed to spark a revival as Lille slumped to their third straight defeat. Despite riding high in fourth place in Ligue 1—level on points with leaders PSG—the French outfit have now conceded 10 goals in just three European fixtures, leaving their qualification hopes hanging by a thread despite the Italian manager's defiant public optimism.