Francis Ngannou says Tyson Fury will rue the day he underestimates the former UFC heavyweight champ!
"[Tyson] has said a lot of things. He better just get ready for October 28th because if he's not taking this seriously, I think he might get surprised and get some regrets for his life," 36-year-old Ngannou told TMZ Sports just days after his highly anticipated boxing match with the Gypsy King was announced.
Fury, by nearly everyone's account, is the best present-day heavyweight boxer ... but Ngannou isn't content with cashing a big check just to lose his boxing debut.