I thought the reality here was Moyes will be a puppet and SAF will continue running the show from upstairs for an extended handover?
In which case, things look no better for Nani.
If on the other hand Moyes is actually the manager, and SAF is an ambassador, then yes, maybe this is a chance for Nani to hit reset and give it another go with us.
Again, people play for clubs on the whole, not managers. Nani isn't going to leave because of Moyes. If he wants to be a United player he'll be glad of another opportunity.