The thirty-year-old Englishman, who was born in Belgium, was appointed by Reims in October 2022, making him the youngest coach in the top five leagues in Europe.
Still, who has been connected to positions in England, externally, started his term with a 14-game winning streak and concluded his debut season in 11th place.
Reims has only won two of their last 14 games, yet they are still 11th in the French top division with three games left.
Club president Jean-Pierre Caillot stated, “We are proud to have been able to contribute to the emergence of a coach who knew how to impose his convictions and his playing identity.”