Whether or not Conor McGregor’s knee is at full strength remains to be seen. His mouth, well that’s a different story. McGregor (14-2 MMA, 2-0 UFC), who was a guest on Tuesday’s new edition of “UFC Tonight” was today officially announced as the headliner of this summer’s UFC Fight Night 46 event, where he’ll meet Cole Miller (21-8 MMA, 10-6 UFC) in a bout for which “Magrinho” openly campaigned following his January win over Sam Sicilia.