His supporters say that he didn't negotiate for Antony and the other fees but the fact is they were all high profile players HE wanted and the board backed him on those. He also had a veto on transfers he didn't want. Antony cost Ajax themselves 20 odd million, and obviously they'd charge a mark-up.
Summer 2022 - We bid to Ajax for Martinez (First choice LB) for around 30-40m, United took negotiations to an extreme and ended up paying 50-60m. Pony up another 80m because now Ajax realises they can take them to the cleaners because of Martinez, then a disaster initial showing ends up with the desperate deal for Casemiro.
Winter 2023 - After spending all his 200m budgets, ETH starts crying about the lack of funds for January and even then they get him Sabitzer (and Weghorst) on loan.
In the entire season, they only sell about 5-10m TOTAL worth of talent so net spend is around 200m
Summer 2023 - Starts by paying 60m for Mount who's had an injury prone season and plays most naturally in a position filled by arguably their best player. Pays 50m to land a keeper available for free the season before and in a year of a considerable number of GK purchases in the PL, proceeds to land probably the worst one in terms of value. Pay approx 15-20m in wages and fees to get amrabat for the season. Only decent signing is Hojlund.
Winter 2024 - Starts complaining about money again after spending another 170 odd million in the summer.