The No Problem star revealed on Twitter that he would be part of a special tribute to the late boxer and activist, who died on 3 June (16) aged 74, at the annual sports awards ceremony.

He shared a picture showing him singing into a microphone suspending from the ceiling as he rehearsed on the EPSYS stage. In the caption, he writes, “I am honored to say I will be a part of a special tribute to the great Muhammad Ali at tomorrow nights #ESPYS.”

Further details on the tribute segment have not been revealed.

It was recently announced that Justin Timberlake, who hosted the show in 2008, would be returning to present the Icon Award to a trio of retiring athletes - basketball icon Kobe Bryant, American footballer Peyton Manning and soccer star Abby Wambach. They are being honoured in recognition of "the indelible mark they have made on the world of sports."

Usher and Zendaya, actor David Oyelowo and basketball stars Stephen Curry and Dwyane Wade are all set to present during the show, which takes place at the Microsoft Theater in Los Angeles on Wednesday. Wrestler/actor John Cena will serve as host.