Of course the official reason the fight isn’t happening next is, ya know, money. Kell Brook’s promoter Eddie Hearn tweeted that Khan was demanding a 70-30 split to make the fight happen which was a clear non-starter for them. Considering that Brook is currently the IBF welterweight champion, and that Khan holds no world title, they wanted something much closer to 50-50.
http://www.badlefthook.com/2017/1/23/14356568/amir-khan-kell-brook-negotiations-collapse
http://www.badlefthook.com/2017/1/23/14356568/amir-khan-kell-brook-negotiations-collapse