Could Jon Jones be the 4th member of the New Day?
Kofi Kingston ain't ruling it out ... telling TMZ Sports he'd love to see the UFC star get involved in pro wrestling -- but he's gotta see Jon's hip-shaking ability before bringing him into the group!!!
Check this out ... Kofi says he actually met Jon recently and admitted he was straight-up starstruck -- "He's one of the greatest of all time man!"
"It was a real honor meeting him ... real cool."
And, with former UFC star like Brock Lesnar and Ronda Rousey killling it in the WWE, Kofi thinks Jon could be the next great crossover.