Diabé Ousmane Cothy Bolumbu Sombo (born 12 July 2004) is a French professional footballer who plays as a left-back for Ligue 2 club Caen.
[3] On 31 May 2022, Bolumbu signed an "elite" contract with Caen, tying him to the club until 2027.
[5][6] Bolumbu is a France youth international.
He was a part of the under-18 squad that won the 2022 Mediterranean Games.
[7] On 31 August 2023, he received a call-up to the under-20s for two matches against Denmark.