Ali would outbox him 7 times out of 10 most likely.
BUT.
Ali was susceptible to a left hook. He was hurt by them multiple times in his career. Tyson had a pretty wicked left hook. Honestly, I think the Clay who fought Henry Cooper would have got ruined by the best Tyson. Ali also liked to play around with opponents at times and Tyson had a different combo of power and speed than anyone Ali fought.
Ali was badly hurt by that shot and thats from an unathletic tough guy who would probably be a cruiserweight today.