Former undisputed heavyweight champion Evander Holyfield has a high level of respect for Tyson Fury, who holds the WBC championship.

When asked about the current top man in the heavyweight division, Holyfield had no doubts about his selection.

"He has long arms and throws shots that you don't see. He can make adjustments. Boxing is mental - it's about who is stronger in the mind, that outweighs physical things. People thought they could beat me because of how I look. With Fury, he doesn't look like he can do it but he keeps proving that he can."

The 57-year-old Holyfield recently revealed the possibility of fighting again, in an exhibition fight or two. 

His announcements comes on the back of his former foe, 53-year-old Mike Tyson, who also discussed the idea of coming back for some exhibitions to raise money for charity.

Holyfield, who fought Tyson twice in the late 90s, would be interested in an exhibition trilogy.

"I'm going to box some exhibitions and get in shape," Holyfield said.

"I don't know [if an exhibition with Tyson can be done], you would have to ask him! I wouldn't ask nobody to do anything they don't want to do. But it's for charity. If we can work something out that works for everybody then it's a win-win-win.

"When people look at me, I know they are looking at my ear. People think I got the whole ear bit off! People don't understand the relationship I have with Tyson. Tyson and I were both on the losing squad trying to make the Olympic team in 1984, that tells you how tough amateur boxing was in my day.

"When Tyson became heavyweight champion of the world, it made me realise that I could do it. Tyson and I had sparred and he was a tough guy even back then, when he was 17 and I was 21."