Muhammad Ali's legacy will "live on", according to former heavyweight title challenger Axel Schulz.

Ali, one of the great sporting icons, passed away on Friday following a long battle with Parkinson's disease.

Since his death, tributes have flooded in from all corners of the globe, as the world expresses its sorrow for the passing of the man described as 'The Greatest'.

And Schulz, whose first of three bouts for the IBF heavyweight title ended in defeat to George Foreman in 1995, says Ali was one of a kind.

"He was a personality, he is still a personality and will always be a personality," Schulz told Omnisport. "He is someone who connected everything.

"It is gigantic what he achieved. But he also made use of his personality. He found the mix out of provoking his opponent, with that he could decoy them, but inside the ropes he could destroy his opponents.

"He was a person who was unique and someone like him will be unique.

"Ali was unique and he will live on. He is a legend and will always be a legend. He is one of the greatest sportsmen ever.

"In each upcoming boxing fight everyone will think: 'How would have Ali handled it?'. It is like it always was and this thinking will be even more present than before.

"Ali is a personality and you cannot ignore him. He is part of our everyday life."