I think it's the biggest bit of hope we've had that he could come back.
He's superb and aye, I'd agree he may be the best young keeper around. That doesn't necessarily mean he's ready to be Man U number 1 though, having his every move and mistake analysed and all over the papers. It could wreck him. Put together a highlights package of him for us this season he looks incredible. Put a highlights package together of any mistakes and over analyse it to death (as they would) and he doesn't.
I can't see any chance whatsoever they sell him. But if they give him another season to get confident, iron out anything in his game that needs looking at (near post) and maybe become England keeper, it suits them and us.