"Obviously we still have a good relationship with Conor," White said. "I respect Conor as a fighter and I like him as a person. But you can't decide not to show up to these things. You have to do it."

White said McGregor didn't want to come to the press conference, because he was in Iceland training and didn't want to ruin his preparation for the fight with Nate Diaz on July 9 in Las Vegas. White added that only McGregor knows for sure if he is really retired.

"Conor did not want to come to Las Vegas and film the commercial or be a part of any of the marketing we have," White said. "He's in Iceland training and that's not possible."

Now, though, it appears that McGregor won't be fighting after all. White said Diaz is flying into Las Vegas on Tuesday and they will discuss a new opponent. White said there would also be another fight added to the UFC 200 bill in addition to that.