McGregor returned to the octagon last month when he stopped Donald Cerrone in 40 seconds in his first fight since losing to Nurmagomedov in 2018.

The Irishman is in talks to take on Justin Gaethje this summer but his long-term goal is a rematch with the lightweight champion who defends his belt against Tony Ferguson in April.

Nurmagomedov, however, claims his old foe has to prove himself before a title challenge.

"'Cowboy' always loses all his main-event fights, always," he told TMZ. "I don't remember when he win. In the last 10 fights, I think he's lost six or seven times.