Mike Tyson; "Muhammad Ali was not of this world"

Why did Mike Tyson say that Muhammad Ali was not of this world?
Why, Mike Tyson has a very special respect for Muhammad Ali, so that whenever the name Ali is mentioned, Mike Tyson gets so excited that he starts crying. He is also ready to attack very badly and physically, if he uses bad words for the great name Muhammad Ali. Do you know something more than everyone about Ali and the secrets of the great Muhammad Ali?

In a show Muammad Ali said that he has seen UFOs and Aliens up close?

Are they mere suspicions or is something more and greater hidden behind the legendary and immortal name, Muhammad Ali?.