For the same reason hatton witter never happened. The chances of witter beating hatton were very high and he would never like to lose two witter cause of the dislike. Kell brook inside 6
Khan already has two losses on his record so he's not protecting anything and is obviously open to fight all.. This fight would happen if Brook wants it to.
Brook vs. Khan would have the makings of Benn-Eubank. I'm sure British boxing will be on a boom if this happens.
Although I think brook would beat Khant if they ever fought Kell need to wait till Amir is in his division and also needs to beat some name fighters, and win some belts first \ Amir has achieved things in boxing and so far kell hasnt
1rd khan comes out strong looking to get Kelly's respect with quick fire combinations. Kell can't seem to adjust to khans long range attacks khan wins the rd 2rd khan comes out much the same kell starting to press. khan walks on to a good uppercut to the midsection. But khans wins yet another round 3rd kell looks to be closing off the ring faster going to khans body with the jab. But khan seems to have kells measure. Rd khan 4rd khans is using the whole ring alot better and is surprisingly tying kell up on the inside. 49 seconds left in the round and khan try's to push kell off him and brook lands a left hook followed by a right hand and khan is down the ref starts counting but stops at 4 as khan is stretched.