So obviuosly if the assumptions in the original post are correct, it doesn't matter when you sell a player - in the beginning or at the end of the season you will get the same amount of cash. On the other hand, bidding wars to buy a player are huge and you pay a lot of cash in the market, much more than before /not only because prices are higher than before by default/. The morale of the story is that we will be bankrupt soon