McGregor has not fought since breaking his leg against Dustin Poirier at UFC 264 in July, 2021.
While he continues his recovery, McGregor has embarked on a new career in Hollywood – accepting his first major acting role in Amazon's reboot of the 1980s classic Road House.
McGregor was recently filming on location in the Dominican Republic alongside Hollywood superstar Jake Gyllenhaal and the Irishman took to Twitter on Thursday to mock "twerps" who had attempted a career in acting but failed – directly naming former UFC champion Bisping.
The British MMA legend, who was recently in Bulgaria filming a movie with 'The World's Scariest Man' Martyn Ford, took offence and promptly replied to McGregor on his podcast.
"I was just befuddled when I saw that," Bisping said. "I'm like, where is this coming from? What's all that about? I mean, god bless him. I'm actually on set in Bulgaria and we stopped for a little break, looked at my phone as you do and someone had showed me that on DMs.
"I wasn't annoyed or anything, just scratching my head, going where's that coming from out of blue? God bless him, he's doing his first acting role and he's all pumped about it."
"I remember my first beer," Bisping added. "He's all excited, he's had his first beer and he's doing a big show with Jake Gyllenhaal, god bless him. Good for f****** you. Well done.
"Why have you got to throw s*** my way? Just f****** make sure you've got your bodyguards around you next time you want to come and talk some s***, you little f***. Jesus Christ."
McGregor caught wind of Bisping's comments and fired back with a furious tirade on Twitter, which he has now deleted.
"Bisping you'll do f*** all you little sprinter, I'll cave your head in," said McGregor, in the first of a lengthy barrage of now-deleted tweets.
"S*** fighter, s*** actor. Sirius Xm head.
"Ya's will see when ya's see me, who'll do what and who'll need what. We will see."
"Do you want to go to war man, yeah? Do you want to go to f****** war? We'll go to war with you, yeah?" McGregor added in a Twitter voice note, also since deleted.
"Security. You little sausage of a thing. I'll have security set you up, when you're in Vegas again, pal. Keep my name out of your f****** mouth again or any type of threatening behaviour, or I'll walk through your front door.
"You little dope. [Go] back where you belong you little clown, you little sprinter."
Some of McGregor's fans are concerned by the former two-weight UFC champion's latest rant.
"We're literally watching McGregor slowly deteriorate before our eyes," wrote one fan on Twitter.
While another posted: "Does anyone genuinely find this guy funny, still? I pity him."
McGregor is expected to make his UFC return early next year and has already indicated that he would like to make a permanent move to welterweight.
The weight division's current champion is British fighter Leon Edwards, who would likely have to face Kamaru Usman in a rematch before a potential fight with McGregor could take place.
Featured Image Credit: Alamy
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