By Harry Davies Tyson Fury confronted his old rival Francis Ngannou after the former UFC champion allegedly called him a “coward”. Ngannou competes for the second time as a professional boxer on Friday when he faces former two-time unified heavyweight world champion Anthony Joshua in Saudi Arabia. Fury will be ringside for the fight at the Kingdom Arena in Riyadh as his brother Roman is competing on the undercard. Fury, Joshua and Ngannou were all pictured alongside Cristiano Ronaldo and Saudi royal advisor Turki Alalsheikh in an unlikely setting on Tuesday night. Fury’s trainer Andy Lee revea…