Cristiano Ronaldo was "bored" at Juventus before he returned to Manchester United according to legendary UFC fighter Khabib Nurmagomedov.Ronaldo and Khabib have a solid friendship and have regularly trained together when not competing in their respective sports, having both reached the pinnacle of football and UFC.Khabib has also commented on the debate as to who is the greatest player of all time between Ronaldo and former Barcelona forward Lionel Messi.Ronaldo left Juventus after three seasons in Italy and returned to Manchester United on deadline day after 12 years away from the club where he won his first Champions League.Speaking to Sport24, Khabib said that "I don't want to disclose any personal messages...
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