CM Punk says he would LOVE to get back in the cage with Mickey Gall ever since he got destroyed in their tilt two years ago ... but Gall says Punk's a liar -- telling TMZ Sports, "HE DON'T WANT THAT!!"
Gall is convinced Punk's been talking about running it back knowin' damn well the UFC won't let the former WWE star back in the Octagon with him and let him get his ass kicked AGAIN.
"I think he's a liar. I think he's a liar. I don't think he actually wants that," Mickey told us.