I dont mind over paying on a top talent. DiMaria turned out a poor signing for many reasons and the fee was too high, but we got most of our monehy back anyway. What I dont like is when we over pay on players in my opinion that are average at the very best....like Schneiderlin and Fellaini. We will probably lose just as much if not more money paying £100m fro Pogba and selling him in three years as we would Schneiderlin and Fellaini, current case if reporst are true for Mata who I rate but never wanted for us.
Forgettting wages the net spend on DiMaria will probably turn out to be far less than it has been on many of the really average signings we have made the last three or four years and if we get him I would expect similar for Pogba.
Saying that I am happier when we buy younger plaers cheaper and turn them in to stars. But that is a gamble in itself. The potential in 3 years or so of Pogba, Mensah and Perreira as our midfield is immense, but as several cases like Januzaj and Ravel Morrison have shown, potential is just potential.