Francis Ngannou’s trainer Dewey Cooper warns Anthony Joshua that his fighter has ‘gargantuan power’

Francis Ngannou’s trainer Dewey Cooper has warned Anthony Joshua of his fighter’s “gargantuan power”, guaranteeing victory in Friday’s crossover super-fight in Saudi Arabia, live on Sky Sports Box Office.

Joshua suffered successive defeats to Oleksandr Usyk before winning his last three bouts, his most recent victory coming against Otto Wallin in December – a dominant five-round win.

But Ngannou represents a…