Footage of Khabib Nurmagomedov head-butting opponents at Russian MMA event resurfaces as Conor McGregor rematch talks gather pace

Terrifying footage of Khabib Nurmagomedov headbutting his opponents has resurfaced as talks of a potential rematch with Conor McGregor gather pace. The Russian has assembled a stellar 28-0 mixed martial arts record since making his debut back in 2008 and currently holds the UFC lightweight title. Recognised as the best 155lbs fighter on the planet […]