Mbenza started playing at at the age of 9 before moving on at the age of 15 to
FC Brussels for a season, followed by another season at
KV Mechelen before his move to
Valenciennes FC.
Huddersfield Town On 9 August 2018, Mbenza moved to
Premier League club
Huddersfield Town on a season-long loan with the obligation of a transfer in the summer of 2019. He made his debut as a 68th minute substitute in a goalless draw with
Cardiff City on 25 August 2018. Following Huddersfield's relegation to the
EFL Championship, Mbenza's loan was made permanent on 9 July 2019 until the end of 2020–21 season, with the club having the option of a further season. He only made 6 appearances for Huddersfield in the 2019–20 season, and departed on loan to Amiens on 3 February 2020 for the remainder of the season. He featured more under the manager,
Carlos Corberàn, who had been appointed in advance of 2020–21 season. He made 37 appearances scoring 5 goals, with 3 coming direct from free kicks in games against
Birmingham City,
Sheffield Wednesday and
Middlesbrough. On 11 May 2021, Huddersfield exercised their option to extend Mbenza's contract up to the end of the 2021–22 season. But on 6 September, his contract was terminated.
Charleroi On 14 March 2022, Mbenza signed a three-month contract with
Charleroi, with an option to extend. ==Career statistics==