Francis Ngannou recently made a bold assertion about Cristiano Ronaldo's MMA abilities, sparking a debate among MMA fans worldwide on the internet. While some supported Ngannou, others slammed the former UFC heavyweight champion for his remarks.In a recent interview with ESPN MMA, Ngannou mentioned Ronaldo when asked which athlete would be best suited for a career in combat sports:''Cristiano Ronaldo would be the best combat sports athlete. Also, not only like physically, he's more solid, but he is a huge combat sports fan, more than ever you can imagine. He knows a lot about combat sports.'' View this post on Instagram Instagram PostFans soon rushed to the comments section to share their reactions.One fan wrote:''Until somebody leg kicks him''Another fan stated:''Ronaldo? Bro doesn’t know about Draymond Green or Lebron James''Other fans wrote:''Yeah the most famous and best athlete in the world should leave football where Saudi is paying him multimillions to play there and Join UFC to get punched in the face so that Dana pays him bread crumbs''''MMA isn't just being athletic. Messi would could have been feather weight champion due to his sports Iq. He has high football Iq. He can read the game very well. He would probably do the same In a MMA match If that was his focus from the start.''Check out more fan reactions below:Fan Reactions [Images courtesy: ESPN MMA on Instagram]Ngannou met with Ronaldo last year in Saudi Arabia. In an interview with Shannon Sharpe, 'The Predator' disclosed that he interacted with the football legend for over 40 minutes, discussing a variety of topics, including the reason behind Ronaldo's move to Al Nassr.As for the MMA scene, Ngannou last competed against Ciryl Gane at UFC 270, securing a unanimous decision win.Francis Nagnnou previews Renan Ferreira clashFollowing his unsuccessful boxing bouts against Tyson Fury and Anthony Joshua, Francis Ngannou is finally set to make his PFL debut in a heavyweight title fight against Renan Ferreira at the PFL Super Fights: Battle of the Giants card on Oct. 19 at the Mayadeen in Riyadh, Saudi Arabia.During a recent appearance on The Ariel Helwani Show, Ngannou discussed his matchup against Ferreira and the latter's tall stature and said:''What I'm worried about is, it's not his [Ferreira] height, if it was just his height, that wouldn't be a problem. I think his skill, his talent, I think that's what we should all be worried about.''Check out Francis Ngannou's comments below (34:05):