Boey made his professional debut with Rennes in a 2–2 Ligue 1 tie with Toulouse FC on 5 May 2019.[1] On 5 October 2020, Boey joined Dijon on a season-long loan.[2]
Galatasaray
On 26 July 2021, Galatasaray announced that a contract valid until the end of the 2024–25 season was signed with Boey.[3][4] On 5 August, he scored a goal on his debut in a 1–1 draw against St Johnstone in the Europa League third qualifying round.[5]
Boey became the champion in the Süper Lig in the 2022–23 season with the Galatasaray team. Defeating Ankaragücü 4–1 away in the match played in the 36th week on 30 May 2023, Galatasaray secured the lead with two weeks before the end and won the 23rd championship in its history.[6] He scored his first Champions League goal for the club in a 2–2 draw against Copenhagen on 20 September 2023.[7]
Bayern Munich
On 28 January 2024, Bundesliga club Bayern Munich announced the signing of Boey on a contract until 30 June 2028.[8][9] The transfer was valued at approximately €30 million with an additional €5 million in potential add-ons. The agreement also included a clause for a percentage of any future sale and two friendly matches, with half of the profits from these matches allocated to Galatasaray.[10][11] On 3 February, he made his debut, coming off the bench to replace Noussair Mazraoui, in a 3–1 victory over Borussia Mönchengladbach.[12] Later that month, he sustained a hamstring injury,[13] followed by a torn muscle a month later which sidelined him for the rest of the season.[14] In the first match of the 2024–25 Bundesliga season, Boey provided the assist for Bayern Munich's first goal of season, passing the ball to Jamal Musiala who slotted in from close range,[15]
International career
Born in France, Boey is Cameroonian by descent and eligible for both nations.[16] He was a youth international for France in the under-17, under-18 and under-20 age groups.[17]
Cameroon manager Rigobert Song stated in September 2022 that Boey had been contacted, but that the Cameroon national team would not "wait around every day" for the player to make a decision on his international future.[20]