The most impressive thing about Kahn for me was his stamina, fair dues, he went 12 rounds and although according to punchstats his output dropped his movement at the end was fluid and effective.

Bilbo mentioned earlier in the thread that the 140lb division isn't that imposing - Kahn has noone to be afraid of.
I think he ommitted Torres and Holt from his consideration and I feel they both would relieve Kahn of his senses.
There's also Pacquiao, Hatton and Witter at the weight, so I'll find it interesting to see where Warren directs him next.