The 19-year-old forward scored three goals and provided five assists for Troyes in Ligue 2 in 2025-2026 as it earned promotion back to the top-flight as champion of the Ligue 2.

Detourbet, who joined Troyes's youth set-up at the age of eight, is reportedly set to spend the 2026-2027 season on loan with Monaco.

"Troyes is particularly proud to have supported Mathys's growth both as a player and as a man," a statement from Troyes read.

"The whole club warmly thanks him for his commitment and professionalism."