The club has been paying the price for bad signings and letting standards slip in the dressing room. Now, they are paying once more as players' value dropped: Maguire down £72m, Antony £68m, Casemiro £60m. Amorim comes in with a definite plan, and the board tells him they will support, but unless they are ruthless (getting rid of the so-called big names with small hearts), there is no future. Fans wants new blood, players who will fight and suit a high-energy system of Amorim, not passengers. Until then, do not expect miracles, only more frustration
In last decade and even longer, Manchester United was completely a newbie on transfer market by purchasing players with super overvalued and expensive transfer costs. It is more painful as later they did not use those expensive players well enough and made it like doubled failures.
All clubs can make transfer mistakes that barely happen while with Manchester United, they have been doing this in many latest seasons. Hence, it is no longer mistakes but more likely severe systematic problem from their club strategies for development and necessary actions on transfer market.