On 7 August 2020, Diehl signed his first professional contract with FC Köln until 2023.[4] He made his professional debut for Köln on 21 January 2023.[5][6][7][8]
On 22 May 2024, VfB Stuttgart announced that they had signed Diehl on a five-year-contract. He officially joined on 1 July 2024.[3]
International career
Born in Germany, Diehl is of Ghanaian descent. He is a youth international for Germany, having played up to the Germany U19s.[9]
Career statistics
As of match played 15 December 2024
Appearances and goals by club, season and competition