It's not just about whether we can fit him into the cap though, it's about whether the front office can do a deal with him that matches their valuation of his importance to us as a player. I think the argument that he can earn more with someone else because their need for his skills is potentially greater than ours, assuming Williams turns out to be the player he's expected to be, is legitimate.
It may be that in a year's time under the new regime it looks and feels like we might be going places and Mo wants to be part of it, in which case he might well be prepared to take a team friendly deal. I wouldn't bank on it though.