The 31-year-old former UFC featherweight and lightweight champ first quit the sport in April 2016.

In March 2019, he again announced he was hanging up his gloves, but on both occasions the retirements were short-lived.

Mixed Martial Arts
'Put him up there at GOAT status' - Dana White reacts to Khabib's retirement
25/10/2020 AT 09:18

"Hey guys I've decided to retire from fighting. Thank you all for the amazing memories! What a ride it's been!" the Irishman said, adding a picture of him and his mother and promising to buy her a dream home.

Mixed Martial Arts
Fighters could lose pay for criticising UFC's COVID-19 safety measures
10/05/2020 AT 10:57
Mixed Martial Arts
UFC 249 in disarray after Souza tests positive for Covid
09/05/2020 AT 08:44