If Khan had a chin, would he be KMD?

[talz]

How much time does he need?

First time he got sparked out was 2008 we are now in 2016 he's been sparked out twice since and had 3 trainers since.

Like Virgil said all his trainers fell in love with his speed and never addressed the basic fundamentals he would require against the top fighters. Virgil is the only trainer he has had who is trying to do this. But because he's been ingrained with deep flaws for pretty much all his career Hunter will need a lot of time to help Khan expel those flaws.