I think it really does depend on what United have planned for the summer. If they let him gut the squad and rebuild it I can see him staying there. If they'll only sanction bandaid signings like Mata then it could spell the end for him.Can you imagine the tantrum Gary Neville would have if they sacked Moyes, considering all the moaning he's done about other clubs sacking coaches, one can only assume he would go into complete meltdown.
In reality though I can't see Moyes not getting the chance to turn things around he will get at least 2 seasons. So unless City, Woolwich, Liverpool or Chelsea have a fit and sack their bosses then I think we are in pole position for LvG