UFC lightweight champion Conor McGregor has met Dana White’s deadline to finalize his side of the terms for a mega boxing fight with Floyd Mayweather.

White said in the lead-up to this past weekend’s UFC 211 event in Dallas that he didn’t have much time left to spend on negotiations for the anticipated fight. As a result, he said McGregor and his team had until Sunday to figure out their part and help move the process along.

That’s been completed.

“The McGregor side is done,” White said during a Wednesday night interview on “Inside the NBA” on TNT. “I’m starting to work on the Mayweather side now.

“It is an honor to sign this record-breaking deal alongside my partners Zuffa LLC, The Ultimate Fighting Championship and Paradigm Sports Management,” McGregor said. “The first, and most important part of this historic contract has now officially been signed off on. Congratulations to all parties involved.

“We now await Al Haymon and his boxer’s signature in the coming days.”

The latest development marks a significant step forward in making the once-fantasy match between combat sports superstars a reality. Despite that, there’s no telling what negotiations with Mayweather (49-0 boxing) could bring as White now moves from working with McGregor (21-3 MMA, 9-1 UFC) and beginning talks with Mayweather’s camp.