In general it's down to the agents, say you had a week to sell your car and a lot of people interested, would you sell it on the first day? Or would you wait the week out for the best offer, hoping that the potential customers get tangled in a bidding war and netting you the most cash?
That's why the window is a load of crap and inflates prices as opposed to the old system when player can move year round.
Yeah i understand that side of things but i mean does the player not have a say? If i was a player in that situation i wouldn't like to find out that Boro won a bidding war with a much better club over me. I'd go to the club i wanted to go to not the club that my agent gets the most money from.