If Mark Zuckerberg really gets in the Octagon with Elon Musk, he'll have arguably the greatest fighter ever in his corner ... 'cause Jon Jones says he's down to train the Facebook billionaire!!
Bones took to Twitter Thursday night to offer his support to the 39-year-old Meta boss ... writing, "You already know I am Team Zuck ... Let me know if you need a training partner!"
As we previously reported, a fight between the two billionaires could actually happen .