It wasn't a flying knee. He was off balance falling forward from that shitty, telegraphed, easily dodged left hand he threw.
WEC Cerrone wouldn't have given up on the easy takedown, but he's a company man now.
Also, stop trying to make "Conor 2.0" a thing. It's not a thing. He fought a guy who was on a 2 fight loss streak, 4 wins in his last 10, and is 37 with fading reflexes, fading speed, fading chin, who showed up for a paycheck.
Maybe Conor should take a top 10 fight in his division instead of cherry picking weak opponents who he matches up well with.