Khabib Nurmagomedov pays tribute to close friend Cristiano Ronaldo for his 'almost impossible' achievement of spending '15 years at the top' after the Juventus star picked up the Golden Foot award for another goal-laden year

Khabib Nurmagomedov has praised Cristiano Ronaldo for his longevity at the elite level of football in a social media tribute.

The retired UFC star is a big football fan as well as a huge admirer of Real Madrid - while he also supports Liverpool, Anzhi Makhachkala and Galatasaray at club level.

The Russian has been photographed on several occasions with the Portuguese football star, who is also a fan of UFC and has followed Khabib's career to date.

Khabib Nurmagomedov (right) praised Cristiano Ronaldo (left) for his lengthy career in football

And after Ronaldo scored twice for Juventus against Parma on Saturday, Khabib said: '15 years at the top.