YouTube star Joe Weller believes he's living 'rent free' inside KSI's head.

Weller, 26, has fired a few barbs KSI's way since their amateur boxing match over four years ago, including repeatedly claiming he is surrounded by a bunch of yes men.

The two British rivals had to be separated by security after getting into a brief scuffle during a livestream on DAZN yesterday.

And Weller, speaking exclusively to GiveMeSport, has had his say on their recent altercation.

ALL THE INFO: KSI vs Swarmz and Luis Pineda: Boxing date, card, venue, tickets, how to watch and more

He also insisted that KSI - real name Olajide Olantunji - didn't know how to react after being confronted, and how he was the one who started it all in the first place.

Asked if it was all just a setup, he replied: "Madness. Planned? What do you mean planned? Yeah planned mate!

"What do you mean? The geezer just called me out whilst I was spectating. I'm rent free in the geezer's head.

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"What did he expect mate? Can't handle it."

Weller faced KSI in an exhibition bout at the Copperbox Arena in London back in 2018.

After a nervy start, Weller lost the fight via technical knockout.

But despite the result, he insisted he would not hesitate to run it back in a heartbeat.

When asked if he would consider fighting him again, he added: "His next opponent? In the street I will.

WATCH: Joe Weller believes he's living rent free in KSI's head

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"F*** this boxing s***, f*** gloves to protect him, I'll just do it anywhere mate.

"I don't give a f***. The kid's a tool."

As for where it all stems from, Weller says it all comes down to 'jealousy' at the end of the day.

He continued: "Jealousy. He can't handle it mate. At the end of the day, he needs people around him, bowing down, saying yes, yes, yes, yes.

"The second there's anyone that can stand up for themselves, he doesn't like it. And it's rent free in his head and I see it every time mate.

"Oh well, it is what it is."

Watch 'Two Fights, One Night: KSI vs Swarmz & Pineda' on August 27 exclusively live from The O2 on DAZN PPV.