Fouss is a center. The same arguments were made last off season about moving Fouss to the 4. We have seen nothing in two seasons of Fouss that would lead anyone to believe that he will ever play the 4. Bringing in a dominant big man would mean Fouss would play a lot less.
The guys that played the four this year weren't great shooters and didn't provide us much else. Putting Fouss in that spot doesn't help and is a step backwards for the offense.