If Doug has intentions is to stay if promoted he wil invest what he needs into the stadium to get it more profitable. I think work in corporate is the easiest way and most valuable.
But the major investment goes on Academy and 1st team facilities.
If he decides to sell, then he deserves a massive amount of gratitude from the fans and the city. And can walk off with a big i told you so look on his face, carrying a deserved full bank account. He has made a massive difference in our profile and our value, whatever he decides, he has been a very good owner