Conor McGregor is edging closer to his boxing debut in the biggest fight combat sport has ever seen. 

The Irish former two-weight UFC champion is scheduled to take on the undefeated Floyd Mayweather in Las Vegas on August 26. As the fight gets closer, McGregor continues to step up his mind games. 

McGregor excels at getting under his opponents' skin and will be hoping he can do the same to Mayweather (it may be one of his only hopes of claiming an unlikely victory.)

The Dublin-born southpaw was recently pictured in an old C.J Watson Golden State Warriors number 23 jersey, and the image has provoke a response from the team's current number 23; Defensive Player of the Year, Draymond Green. 

Green posted the image on Instagram with the caption: "We rocking with Floyd bro not you... take that off bruh @thenotoriousmma."

Mayweather was quick to comment on the post, saying "splash for the cash #warriors #michigan."

Of course, it wasn't long before McGregor had his say. Conor pointed out it was Watson's jersey he was wearing (it's not the first time he has used C.J. Watson to poke fun at Mayweather) and insisted he didn't know who Green was. 

His comment read: "That's C.J. Watson mate. I don't know who the f--- you are. No disrespect tho kid, keep hustling and stay in school."

Before he added: "Now ask yourself why I'm rocking C.J when I don't or give a f--- about basketball. I dribble heads off the floor. Not a ball. This no game here kid."

But Draymond wasn't about to let McGregor have the last word, hitting back at the 29-year-old. 

Green wrote: "Hahahahaha that number won't be worn again when I'm finished with it clown! Gold medalist, NBA champ, all star, DPOY etc!!! Hahahaha stop it boy! Nate Diaz (Bay Area stand up) whooped you in your ring! Money May about to destroy you!!! Take that warrior jersey off bruh you'ere an incredible internet troll we don't rock with you! Go train bum!!"

It's clear to see which corner Green is in ahead of the big-money fight, and it's hard to argue with that as Mayweather should win comfortably. 

The bout has already been hyped beyond belief with a four-day tour that saw press conferences take place in Los Angeles, Toronto, New York and London. 

With athletes from all corners of the sporting world getting involved, it's hard to see the hype dying down.