Tyson Fury is expected to announce his WWE debut at a press conference on Friday.
The former heavyweight boxing world champion will appear in Las Vegas alongside Braun Strowman whom he confronted on Monday Night Raw.
Fury and Strowman are expected to clash in Saudi Arabia on October 31 as part of US broadcaster FOX's plans to build Fury's rematch with Deontay Wilder next February.
Brock Lesnar and Cain Velasquez will also be present in Sin City on Friday with the pair also set to appear in the desert this month.
Lesnar and Velasquez fought in the UFC in 2010 when the latter dethroned the wrestling legend as heavyweight champion.
On Monday, Fury was invited to take the microphone and send Strowman a message after their confrontation last week.
Fury demanded an apology which was not forthcoming and he took matters into his own hands.
Security staff rushed in to restrain the boxer but they couldn't keep Strowman away from him as he ran in reigning punches on his new rival.
The ring filled with security staff but even they took some punches, with Fury knocking several of them to the floor, as the two brawlers couldn't be kept apart.
And soon the WWE locker room had emptied as wrestlers rushed in to try and stop the shenanigans.
Strowman eventually left the ring - only to rush back in in an attempt to catch Fury by surprise - and they were still brawling as Monday Night Raw went off air.
Fury had said: "I'm not trying to provoke him. He tried to make a fool out of me by throwing Dolph into me and I want an apology."
Strowman retorted: "I was trying to have a little fun when I saw Tyson Fury sitting ringside at WWE Smackdown - but if he wants to get serious then so do I.
"Tyson Fury's got a mean punch, but so do I.
"So if he wants an apology, he'd better ask nicely - because if he does, he might just get one. But if he doesn't, he might just get... these hands."
