Conor McGregor says he's ALREADY reached out to the UFC to fight in the Octagon again -- insisting, "I put my name forward to step in at UFC 222 to face Frankie Edgar when Max Holloway pulled out." McGregor has seemingly just responded to Dana White's comments to TMZ Sports ... in which White said he didn't know if Conor would ever fight again because he's got sooo much money now.