It seems like a tall order to beat all those guys but the point is he needs to stick around and fight nothing but world class champions from here on for the next 5 years. It is not impossible for him to do this considering that he has not been in any wars and has rarely been hit clean in his entire career.

Most likely non of this will happen but if the question is what does he have to do to make the top 5 all time greats? well he has to do great things, extraordinary things. Things that make people think that there is no way he can do that, then do it.

Ali achieved greatness when he fought and beat the man who had destroyed the man who beat him. Whoever thaught that he would beat Forman at that time? Very few.

Leonard achived greatness by coming out of retirement and fighting the most dangerous man in the MW division. Nobody gave him much of a shot against Hagler. I guarantee you that if Leonard had not fought Hagler he would not be considered top 10 all time.

Some people try to achieve greatness but fail. For example, Tito wanted to go all the way up to 175 and challange Roy Jones. He knew this would be almost impossible. But he also knew that that is what it would take to achieve greatness. He failed, but imagine if he had won the MW tournament and then had beat Roy Jones. He would no doubt be considered top 10, maybe top 5 all time. Nobody would've even remembered how he was outboxed by Oscar.

Being an All Time Great is not about being the most skilled. It is about doing great things in that ring.