I guess this is something we can do nothing about. Those morons will always pay too much for players who are not worth the fees. Targetting the right player is something we need to get smart about.
Though he is one of the top players in the world, going to Napoli for KK is not a very prudent move especially if we are haggling over a few million. Scout better. Get some rough diamonds instead of spending 50 mil on multiple players. Targetting Upamecano before he gave a badass quarterfinal performance or signing a new deal would have been wise. Quality of players don't change over a few matches but their prices skyrocket. (James Rodrigues and the world cup). It's like we wait for the players valued to increase manifold :P