McGregor: No one will come close to Ali's greatness

Conor McGregor added his voice to the chorus of adoration and respect from around the sporting world for Muhammad Ali, who died aged 74 on Friday.

McGregor used one of Ali's most famous quotes to pay tribute to "The Greatest."

Ali was arguably the prototype of the modern-day athlete. His outspoken nature and supreme confidence was matched with an otherworldly skill set that meant he could back up his brash claims, paving the way for athletes like McGregor - who shares a similar persona - to become stars in their respective sports.