How much did each club spend to produce their one player?
Whatever it was is nothing in comparison to the transfer fee either club would receive for either player if they were sold, plus the wealth they will bring into the club for winning trophies or selling merchandize will swallow up their cost as an academy player easily.
They sunk £200 million in to their (then) new academy site in 2014.
How much have they spent since?
How much is the annual wage bill for their gargantuan staff model?
