We are doing the same mistake, 70m for de ligt and he floped,
70m for Vlahovic and still a big question mark for that amount we paid for him
70m for Chiesa and no club has offered a half of it yet
90M for Higuaín and always disappeared in the big games.
koop is overvalued, he worths 50m at maximum.
De Ligt was very young, came off of one excellent season and landed with a huge signing on fee and wages that we would never be able to maintain for his next contract renewal.
Vlahovic came off the back of 1.5 excellent seasons, but was clearly raw and brought in on a high exponential wage.
Chiesa came off the back of a couple of decent seasons as a promising Italian player on a decent salary with large deferred fees.
The Higuain thing is a lie, he delivered in the majority of domestic league and cup games. The only big game for Juventus he was average in to my memory was the Cardiff final, but there were many worse players that day.
Yes Koop is overvalued at 60m, even by current transfer fees, but he’s produced consistently in the league for the past two years, is 26 and by reported figures would be joining on a reasonable wage.
Therefore, there are minimal similarities between these others transfers you mention, other than maybe Higuain where you are expecting end product, high fee, bringing in at the prime and not expecting to recoup a fee at the end, and even then we are bringing in Koop 2 years younger.
Unless of course you deem a ‘mistake’ to simply be paying a large transfer fee, in which case we should fill the squad with mediocrity or prospects at 20 million and continue playing for a 4th place trophy year on year by your logic. (Kind of like Milan’s strategy)