Billy Joe Saunders has threatened to pull out of his fight with Canelo Alvarez this weekend following a dispute over the size of the ring.

Saunders is due to face Canelo, who many regard as the current pound-for-pound king, in Texas on Saturday.

Saunders is putting his WBO super-middleweight title on the line, while Canelo holds the WBC and WBA titles.

But Saunders is unhappy with the offer of the fight taking place in an 18ft ring and is demanding a 24ft alternative.