Israel Adesanya Sends Most Controversial Message Yet To Jon Jones Ahead Of Potential UFC Super-Fight

And their online beef took a drastic turn when the UFC middleweight champion mentioned the ex-UFC light-heavyweight champion's late mother.

Talking about a potential UFC super-fight, Jones tweeted: "I'm curious to hear what his father tells him when he asks about fighting me. I wonder if his father believes he's ready? Eugene definitely doesn't."

Adesanya hit back: "My pops already told me how I'd beat you. Trust me he knows. Your mom would be disappointed in who you've become."

'Bones' swiftly replied, saying: "Sitting with tens of millions of dollars, children on fire about Jesus Christ, one of the greatest martial artist and world history. Sure my mom is disappointed. Why you mad bro?"

He continued: "My mother was an amazing humanitarian. I know for a fact that the care project makes her more proud than anything I've done in the UFC."

In another tweet, he wrote: "Izzy thanks for giving me the opportunity to highlight my amazing mother this afternoon, now I'm just missing her. Are we still on for 2021?"

Jones' mother Camille died in 2017 after a long battle with diabetes.

The American fighter, meanwhile, hasn't fought since beating Dominick Reyes at UFC 247 in February.

A monstrous clash between Jones and Adesanya has been mooted as they stoke their intense rivalry.