For far too long, Manchester United were seen as the prime example of how not to run a club in the transfer market. A squad full of over-paid, over-rated players who, if they had joined other clubs, surely would not have cost anywhere near as much. That’s the so-called ‘Manchester United tax’ for you. This rather unhelpful trend rapidly developed once United’s rivals realised that they would simply throw money at a problem – and many a player – regardless of how much they had inflated their target’s true market value. See Harry Maguire at £80 million. Antony for £82 million. Even Rasmus Hojlun…