A) hes scared of Brook and keeps giving him all these hoops to jump through hoping he fails. B) its Khans way of getting rid of threats. He did a similar thing after the Garcia fight where he said Garcia and Judah should fight, matthysse should fight Peterson and then the winners face each other and then whoever wins that gets a shot at Khan. Khan is ducking Brook and has no intention of fighting him. Many years ago on an interview together khan told Brook to fight and beat Bradley first and then hell face him.