YouTube star KSI is coming for Conor McGregor AND Floyd Mayweather - but wants to face Jake Paul first.

KSI, real name Olajide Olatunji, has revealed he wants to test himself by pushing the boundaries as far as physically possible.

The British YouTube star, 29, was set to face American rival Alex Wassabi at London's Wembley Arena on August 27.

Wassabi, who beat his brother Deji on points in March, has been replaced by Swarmz on less than a month's notice after suffering an undisclosed injury in training.

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

And it appears KSI is ready to move on as he put his focus on McGregor, 34, and Mayweather, 45, as well as his bitter rival Paul, 25.

During an appearance on the Flagrant podcast, he said: "My end goal is to see how far I can go with everything.

"For example with the boxing once I beat Jake Paul, oh what is next? 

"Conor McGregor, Floyd Mayweather? Why not? Anyone at that point.

"With the music I want to reach number one and then expand to America and Asia and the world. I just want to constantly push the limits."

KSI has made a habit of calling out Paul in the past, and he told the podcast he originally wanted to fight him first before he ended up facing his brother Logan Paul.

He added: "I tried fighting Jake first because I thought if I fight Jake then Logan it'll be a bigger occasion.

"But Jake just didn't want any of it. He was like 'fight my little brother'. Yeah bro, he p***ied out hard.

KSI hasn't fought since November 2019

"So that's why I find it hilarious that as soon as I go into music he's like 'where you at p***y?'

"And I'm like, okay."

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And while there's certainly no love lost between them, KSI says he has ultimately respects Paul like he does anyone else who decides to step into the ring.

He continued: "Oh no no I respect any man that goes into the ring because f**k me bro like that is one of the hardest things to do.

"Like even the journey to get to the ring is f***ing hard, bro. Because yeah, look, anyone can get into the ring and get knocked out, that's it. But to be able to do that journey to even get into the ring... it's hard, bro, it's tough.

"I have to respect it. F**k him. But I have to respect it.

"So yeah, there's obviously going to be respect there."