The footage went viral when video emerged from a Manchester United fan account that seemed to show the pair get into a grappling match. Ngannou, who stands at 6’4″ just weighed in at 256lb for his MMA comeback, took down 6’3″ Onana and moved him around with ease.

What happens when a world heavyweight MMA champion takes on a world-class goalkeeper in a fight? It's a question that doesn't really need an answer, and luckily, Francis Ngannou was just play fighting with Manchester United's André Onana.

Video footage shows Francis Ngannou spar Manchester United star Andre Onana after the UEFA Europa League game against Bodo/Glimt on Thursday at Old Trafford, in Manchester. It was one of Ngannou's first public outings since his thrilling return to mixed martial arts,