The former Disney star beat the 58-year-old boxing legend - who returned to the ring after a 19-year break - in a one-sided fight in Texas last month, and the 31-year-old social media sensation thought the whole idea "stunk”, and he couldn't see any "point" in Jake getting in the ring with Mike.
Speaking at 'The National Lottery's Big Bash' at London's OVO Arena Wembley on Wednesday (04.12.24), the 'Thick of It' hitmaker exclusively told BANG Showbiz: "I thought it stunk.
"What was the point of him fighting Mike Tyson, an OAP who has no right to be in the ring at that age?
"I’m sorry, no. I did not agree with it, and the outcome was so obvious.
"I knew some people who actually bet on Mike Tyson winning, and I was just calling them stupid. I was like, ‘Are you serious?’
"A prime Jake Paul in the time of his life is going to easily beat Mike Tyson, who is old.
"It’s pathetic. It was pathetic."
In both 2018 and 2019, the influencer-and-musician got in the ring with Jake's older brother, Logan Paul, drawing their first fight and winning their second.
And now, KSI admitted he'd love to box Jake, but their weight categories would need to match up first.
He said: "I’d love to fight Jake Paul, but I just can’t get the weight sorted."
Next year, KSI - whose real name is Olajide Olayinka Williams Olatunji - has got many projects lined up but his fighting is what he is looking forward to.
He said: "I’ve got a lot coming, so I don’t know if I can say one thing that I’m excited the most about because there’s a lot.
"Literally, I’m fighting again next year."
Watch 'The National Lottery’s Big Bash' on December 31 on ITV1 and ITVX.