I agree with Skipiness, the B77W for Cathay would be ideal for MAN.
Size wise, yes its going to take a lot for pax to fill it up, but the cargo underneath will help absorb any slack for the most part.
Maybe bringing the 2 class B77W is what CX are waiting for ex-MAN.
Also agree that aside from our annual charter on the QF2, we will never see QF back at MAN, their chance has long gone in my opinion.