The WWE Superstar and internet superstar announced the big news on Tuesday ... saying, "OCTOBER 14 I return to boxing after fighting Floyd Mayweather over 2 years ago."

"I doubt this little parasite will show up but if he does I’m going to erase him from existence."

Paul's hesitation is warranted -- Conor McGregor's buddy was supposed to fight KSI in January ... but backed out due to being "underprepared," according to Misfits Boxing's Mams Taylor.

Paul -- 0-1 as a professional -- most recently went up against TBE in Miami back in June 2021, an exhibition fight that did not have a winner declared.

This will be Danis' boxing debut ... but he holds a 2-0 record in Bellator.

Conor seems pretty stoked for his friend's combat comeback ... saying, "Dillon Danis Returns!"

Danis' involvement is pretty interesting ... considering KSI is on the same card, fighting Tommy Fury.

KSI told us Danis was banned from Misfits Boxing after pulling out of their fight ... saying he would "slap him in the face for all the disrespect he gave me."

It's gotta be a bummer for Tyron Woodley, who recently told us he wanted to throw his name into consideration to be Logan's opponent.