Manchester City have confirmed the signing of Mathys Detourbet from Troyes in a deal worth around €25 million. The move, completed on 27 June, keeps the 19-year-old winger within the City Football Group family, since Troyes is one of twelve clubs owned by the same group that runs Manchester City. Rather than joining up with Pep Guardiola's squad straight away, Detourbet has been loaned back out to Monaco for the 2026-27 season.
City have been tracking Detourbet for some time. Roma had an €8 million bid for him turned down last summer, and his stock has climbed sharply since. He is a France youth international with caps at Under-17, Under-18, Under-19 and Under-20 level, and he was part of the France squad that won the Maurice Revello Tournament with the Under-20s in 2025. A left winger with the technical qualities to operate centrally as well, he fits the profile of young, technically gifted attacker that City have increasingly prioritised, getting him signed before his valuation climbed any further.
For Troyes, it is a significant loss. Detourbet had been at the club since he was eight years old, coming through the academy before making his first-team debut in a Coupe de France win over Rennes in January 2025 and signing his first professional contract that May. He was a key part of the side that won the Ligue 2 title and secured an immediate return to the top flight, and the club's official statement thanked him for his "commitment and professionalism" during his time there. Losing their breakout academy product just as they prepare for life back in Ligue 1 is a blow, even with the transfer fee softening it.
His numbers last season reflect a player who did more than just chip in: three goals and six assists in Ligue 2 as Troyes won the title, with his tally in all competitions rising to four goals and seven assists in 27 appearances. For a teenager playing regular senior football for the first time, that end product marks him out as one of the more promising attacking prospects to emerge from the French second tier.
Rather than throwing him straight into a Premier League title race, City have opted for a loan to Monaco to continue his development in a strong Ligue 1 environment and European competition. The loan is initially for one season, with an automatic extension to a second year triggered if he plays five or more matches for Monaco. City have also retained matching rights over any permanent sale from Monaco and an option to recall him, for a fee, if they want him back at the Etihad sooner. It is a structured pathway that mirrors how City have handled several other young signings — get the player tied down early, let him play regular senior minutes elsewhere, then assess when he's ready to be assessed at Manchester City itself.
On the pitch, Detourbet's game is built around pace, dribbling and end product from wide areas — attributes that should translate reasonably well to Monaco's forward-thinking style. Whether he ends up a long-term City player or eventually moves on permanently will depend largely on how he performs in Monte Carlo over the next year or two.