On Monday, Conor McGregor posted a video to his Instagram account announcing that he was going to have knee surgery. “Well folks, here we go again,” he captioned the video.  ”Surgery number 5 of my career coming up! All things considered that is an ok number! Let’s do it, WE GOT THIS!” View this post on Instagram The former two-division champion headlined the UFC 329 fight card on July 11 in a rematch with former featherweight champion and former BMF titleholder  Max Holloway