Oliveira ready if Khabib returns
The Brazilian spoke on a potential match-up with the Russian former lightweight champion
Brazil's Charles Oliveira has vowed to "shock the world" when he faces Russian rival Islam Makhachev for the vacant lightweight title at UFC 280 in Abu Dhabi later this month - and insists he would be "ready" for Khabib Nurmagomedov if the MMA icon ever reversed his retirement decision.
Oliveira is bidd