FILE - British former world champion Anthony Joshua, right, and MMA fighter Francis Ngannou fight during the heavyweight boxing showdown at Kingdom Arena in Riyadh, Saudi Arabia, Saturday, March 9, 2024. (AP Photo, file)

British boxer Daniel Dubois arrives at the Odeon Luxe Leicester Square, London, Tuesday Sept.17, 2024. (Bradley Collyer/PA via AP)

British boxer Anthony Joshua arrives at the Odeon Luxe Leicester Square, London, Tuesday Sept.17, 2024. (Bradley Collyer/PA via AP)

British boxer Daniel Dubois arrives at the Odeon Luxe Leicester Square, London, Tuesday Sept.17, 2024. (Bradley Collyer/PA via AP)

FILE - Britain's Daniel Dubois, left, and Ukraine's Oleksandr Usyk during their world heavyweight title fight at Tarczynski Arena in Wroclaw, Poland, Saturday, Aug. 26, 2023. (AP Photo/Czarek Sokolowski, file)