Not a chance.
We are supposed to be looking at CB/LB, and I can certainly see Dawson going, but no chance we'd be interested in MYM unless it was for peanuts. We have Kaboul, Vertonghen, Chiriches and Dawson, plus Capoue, Fryers and Veljkovic can sub in if needed. We'd certainly like an upgrade on Dawson, but MYM isn't that - who has more value right now? Dawson played 41 games last year, MYM hasn't managed that in a year and a half (and I'm guessing that includes rather more sub appearances). Dawson is "homegrown".
I think it's more likely we get Caulker back.