As soon as pacquiao lands its lights out. Khan's chin will not hold up to that kind of power. Probably a Hatton style lights out.
A death sentence for Khan. He doesn't have the intelligence to time Manny and his power is decent at best. He definitely isn't holding up to Pacquiao's punches either. Over within 3 and likely a highlight reel KO as mentioned above.
Roach could almost take Khan himself. It isn't even a contest. I don't think Khan should be entertaining the idea of a big payday against Pacquiao/Mayweather, because he really doesn't deserve it. I can't see Khan getting past DA, and I'm saying that as a Brit.
Khan would make the build up hilarious, he'll be mouthing off about how he beat Pac up in sparring & how he was the no1 fighter at the wildcard & then Pac would put him away 1st round haha
Everyone knows Khan's weakness. If Manny didn't get that dude out within six rounds, he should retire.