Hypothetically obviously, but why would anyone want Gibson to be part of any deal? All he'd be doing is reducing the cash element of the transfer.
Because he has a foot like a traction engine?
That aside...I'm not sure.
I'd be surprised to see a 20 mil offer for Rodwell though. If we did get one it'd take a lot of faith by Moyes to turn that kinda money down for someone who is still not really an established part of our starting 11.
I'd send him out on loan for 6 months or so personally, assuming this story is nonsense. He needs to play regularly and find his position.