37-year-old Cameroonian Ngannou has boxed only once professionally.
Joshua is a 34-year-old Briton who has been world champion twice after winning gold at the 2012 Olympics.
Where to watch the Anthony Joshua fight with Otto Wallin on Saturday night, as well as the undercard bout between Deontay Wilder and Joseph Parker including
It often seems an impossible task to get the really big names in heavyweight boxing to fight each other, but at least two of them are on the same .
As New Zealand s Joseph Parker gears up to take on American powerhouse Deontay Wilder, we talk Saudi Arabia, sparring with Tommy Fury, the plan for the ring and why the pressure is (sort of) off.