Mark Zuckerbergis refuting Elon Musk's Friday morning claims ... saying no details of their potential fight have been finalized at all -- adding that he still wants Dana White involved in the process.
The Meta boss unloaded his side of the story on Threads on Friday afternoon -- just a couple hours after Musk told his 156 million X followers that a bunch of the particulars of the future billionaire brawl were now set in stone.
In one of his tweets ... Musk said the tilt will go down at "an epic location" in Italy. In another, he said all of the action will be live-streamed on X and Meta.
He also said White and the UFC are now out of the planning process, insisting, "The fight will be managed by my and Zuck’s foundations."
Zuckerberg, though, made it clear he hasn't agreed to any of those stipulations just yet ... writing in posts on his social media app, "please assume anything [Musk] says has not been agreed on."
"Not holding my breath for Elon, but I'll share details on my next fight when I'm ready," he added. "When I compete, I want to do it in a way that puts a spotlight on the elite athletes at the top of the game. You do that by working with professional orgs like the UFC or ONE to pull this off well and create a great card."
Zuck then said he's still training like a mad man for the potential bout -- showing off a photo of him working in his backyard Octagon.
The two businessmen initially began the process of setting up a fight way back in June ... when Musk floated the idea of a cage match following the revelation Zuck's Threads was in the works.
While the two sides clearly have a ways to go before anything is officially set ... one thing is clear, Musk won't be able to fight any time soon, 'cause he says he needs minor shoulder surgery that will put him on the shelf for at least a few months.