I don't think Manchester United will take Gareth Bale back to Premier league. He play really good in Real Madrid and I think he have a high price. After Manchester United signed Paul Pogba with a new transfer record, I think they will not spend a big money again.
And if he join Manchester United, I'm afraid he will be like Di Maria.
You wont know what manchester united really thinking is right now. No one really expect them to bring pogba back. If pogba doesnt cost that much then it is all good however he cost a fortune and his performance is nothing near that amount. They are now getting things exactly like what real madrid does