"He may never fight again," said White in an interview to GGN News.

"You have to be hungry, and you may not be hungry with $75 million in the bank, but he is hungry for Mayweather and hungry to prove people wrong," her added.

The UFC chief informed that McGregor could be minting as much as $75 million in a fight with Mayweather and be tempted not to return to the inevitably smaller purses in UFC.

In a short span of time, the angry Irishman has McGregor known for his excellent promotion skill has seen a meteoric rise UFC, becoming the only fighter to win world championships in two different weight classes at the same time.