"I can do you both in one night. I won't even break a sweat. I will destroy you both within a round," McGregor wrote on social media.
The bout between Conor McGregor and Michael Chandler will take place on June 29 and will headline UFC 303.
Recall that McGregor had his last fight in July 2021, losing early to Dustin Puryear. Conor broke his leg and for a long time recovered from the injury.