Having completed a boxing-WWE crossover in Saudi Arabia last weekend, Tyson Fury has teased a new venture into the world of MMA, and he may have a beast waiting for him.Francis Ngannou responded to Fury calling him out, promising to retire the 'Gypsy King' should he enter the Octagon with 'The Predator'.However, Fury's confidence may take a hit when he sees who Ngannou has enlisted to train him should the fight ever happen.Mike Tyson took the time to give the Cameroon-fighter some tips on a boxing bout with Fury.Despite stating his interest in a crossover to the Octagon, UFC president Dana White dismissed the idea.

“Fury’s worked hard his whole life to become one of the top four [heavyweights] in the world in boxing,” he told the media in New York.

“Why would you wanna even come over and attempt this? I don’t think it ends well for him. It doesn’t make sense for his career.”

Despite White's doubts, Ngannou seemed fully up for the idea, stating: “Don’t be scared Fury. You called me out and now you’ll have to live with it.”

Fury responded to the tweet by simply saying: “It won’t be long to wait! Then I’ll show u how we roll.”

Ngannou finished the social media interaction by asking Fury to begin arrangements for the heavyweight contest.

“You don’t have to worry about other ‘MMA Heavyweights’ because I might just retire you. Tell your promoter to call UFC.”

With arguably one of the most powerful sets of hands in the UFC, Ngannou has racked up three consecutive wins, knocking out Curtis Blaydes, Cain Velasquez and Junior Dos Santos all inside the first one-and-a-half minutes.

Tyson Fury is also regarded as one of the best in his sport, remaining unbeaten with 29 wins.

A contest between the two would certainly be interesting, whether in a boxing ring or Octagon.