The UFC veteran also left the conference early as the UFC aired a surprise trailer announcing his rival Conor McGregor's fight with Khabib Nurmagomedov. Nurmagomedov (26-0) won the title in April at UFC 223 against last minute challenger Al Iaquinta in a dominating performance that ended with a unanimous decision.
Here, Press Association Sport looks at the key questions as the pair prepare for what has been billed as the "biggest fight in UFC history" by president Dana White.
UFC chief Dana White is satisfied with how the legal system handled Conor McGregor's bus attack in NY, and he has no intention of adding any more discipline on top of that.
The announcement at Orpheum Theater in downtown Los Angeles - made via a pre-produced video that included footage of the Barclays Center incident - was made at a UFC seasonal news conference to reveal fight cards running through the end of the year.
Nurmagomedov took McGregor's 155lb title in April, with the Irishman stripped of it due to inactivity.
Those include a September 8 pay-per-view card in Dallas headlined by the Tyron Woodley-Darren Till welterweight title fight and a December 29 card in Las Vegas likely to feature a fight between women's champions Cris Cyborg and Amanda Nunes, although negotiations continue.
In an interview with TMZ, Diaz said the lawsuit was settled a month ago and criticized the UFC for their lack of promotion.
"I think that we're not going to have any problems with these guys. This is going to be one of the greatest fights you've ever seen". "I've never turned down a fight in my life", Diaz said. "It's good to have Nate back". The popular Diaz (19-11) hasn't fought since that majority-decision loss to McGregor in August 2016, but he agreed to fight Dustin Poirier in a lightweight bout in NY at UFC 230 on November 3.
Nurmagomedov, whose rise to prominence has been more of a slow burner in comparison to McGregor, was touted as an opponent when his foe first became lightweight champion.