It's not a case of offering him a new contract as I thought United had already done that, its more along the lines of Dave and his camp refusing said contract and negotiations were ongoing, I do not think he wants to be at United any more.
I do not think his heart is in it any longer, and the more mistakes that he makes, the more his confidence will drop, and the more errors will happen, defence is starting to have work done to it, but what assurance will it give are defenders knowing that is goalkeeper is prone to making mistakes all of a sudden.
I would say drop De Gea for a couple of games and give Romero a chance, If Dave no longer wishes to be here then so be it, but why continue playing a keeper that's cost United points already.