The club's start-up funds to start the transfer of players were originally able to improve the combat power, or it was worth the money, but some of the transfers backfired instead, so in international football, which transfers are more money-making?
The 10th Sancho joined Manchester United in the summer window of 2021, Manchester United spent 85 million euros to sign Sancho from Dortmund, and Sancho was worth 90 million euros at that time. Now that he is at odds with manager Ten Hag, it seems that it is only a matter of time before Jadon Sancho leaves Old Trafford. 
No. 9 Antony is the best to join Manchester United, but some players join a club in Gaoxin but do not show their true strength, or the original strength is like that. And Antony's arrival at Manchester United is official. 
In the 2022 summer window, the Red Devils spent nearly 100 million euros to sign Antony from Ajax in the Eredivisie. At that time, Antony was worth 75 million euros. And the player who made the Red Devils spend a lot of money to bring in failed to reflect his ability and value, and the so-called princess disease is also skyrocketing, of course, such a grumpy and incapable player has shrunk to 50 million euros after only one season, and still maintains an embarrassing record of 0 goals and 0 assists in the limited playing time.
No. 8 Jovic joins Real Madrid in the 2019 summer window, Real Madrid spent 63 million euros to sign Jovic from Eintracht Frankfurt in the Bundesliga, and before joining the Galaxy, Jovic was worth 60 million euros. But perhaps it is the reason for the lack of adaptation to the soil and water that Jovic, who was introduced by Real Madrid, only for the scene in addition to 3 goals and 5 assists in the 51-game appearance record. And such a poor performance also made it purge by Real Madrid 0 yuan, but Real Madrid's 63 million euros were really unjustly spent. 
No. 7 Pjanic joined Barcelona in the 2020 season, Barcelona's finances were in crisis, and it was thought that the transfer of stronger players could relieve the pressure and strengthen the squad at the same time. As a result, Pjanic was brought in from Juventus for 60 million euros. Pjanic, who was 30 years old at the time, was worth 50 million euros. But this deal is really a failure for Barcelona, and in the 30-game appearance record, it is a dazzling statistic of 0 goals and 0 assists. After 2 seasons at Barcelona, he finally terminated his contract with the club for free. And the past two years have really made things worse for Barcelona. 
6th Stroke Nikolai. Pepe joins Arsenal In the 2019 summer window, Arsenal FC signed Nikola for an excess of 80 million euros. Pepe. At that time, Pepe was worth 65 million euros. But this excess fee did make Arsenal a big deal, Pepe went from main to substitute and then loaned out at the club, and although he has made 112 appearances, his 28 goals and 21 assists are really embarrassing. 
No. 5 Griezmann joined Barcelona In fact, when Griezmann played for Atletico Madrid, he was already an absolute main player. But in the summer window of 2019, Barcelona began to spend a lot of money on it again. Costs 1200 million euros to bring French striker Antoine Griezmann to Camp Nou. But before the big ambitions, Barcelona also paid for their arrogance. Of course, 1200 million euros, coupled with Griezmann's performance, really made Barcelona Club feel pain. And the French striker was eventually purged. And the return to Atletico Madrid only cost the club 40 million euros. It's really more popular than people. 
The 4th Dembele joined Barcelona Now look at it, Barcelona and Manchester United can really be called a big club, Manchester United's Sancho, as well as Barcelona's Griezmann and now Dembele in Paris, it was really the water in Barcelona's mind at the beginning. In the 2017 summer window, Barcelona FC signed Dembele from Borussia Dortmund for a whopping $13.5 billion euros. At the time, Dembele was worth only 60 million euros. And the French player is also known as Neymar II. Not only inherited Neymar's jersey number, but also inherited the vitreous body of the Brazilian superstar. And such an injury is also a headache for Barcelona FC. In the 6 years at Barcelona, although there were occasional outstanding performances, the whole was in the injury stage, and then joined Grand Paris under the call of his fellow countryman Mbappe. During the six years of the Red and Blues, Barcelona lost a total of 85 million euros. 
No. 3 Neymar joined Riyadh Crescent In fact, since Neymar officially became an important member of the Brazilian national team in 2014, he seems to have an injury. At the same time, he is also quite talented in acting. In the summer window of 2023, Saudi giants Riyadh Crescent spent nearly 100 million euros to bring Neymar to Saudi Arabia. And Neymar's joining Riyadh Crescent also has various benefits. But Neymar's injury attributes also indicate that he cannot lead Riyadh to victory and win the championship like Ronaldo, and Riyadh Crescent can only eat coptis dumbly, and there is no bitterness to say. Neymar will also miss next year's Copa America. 
The second Coutinho joined Barcelona In fact, in the negotiations with Liverpool on Coutinho, the Barcelona club also had a lot of twists and turns. In the end, it ended with 1The $3.5 billion transfer** brought Coutinho from Liverpool to Barcelona. At that time, Ku Bird's worth was only 90 million euros. Not only could not adapt to the rhythm of La Liga or for other reasons, Coutinho soon faded out of Barcelona's main squad and was loaned out of the club all year round, and the mediocre Coutinho was eventually sold by Barcelona to Ruston Villa in the Premier League at a low price of 20 million euros. And Barcelona lost a total of 11.5 billion euros. 
The first Eden Hazard joined Real Madrid in the 2019 summer window, and Real Madrid ended with 1A €1.5 billion transfer** to bring Belgian superstar Eden Hazard to the Bernabeu from Stamford Bridge. At that time, Hazard was worth 1500 million euros. At that time, he also wore the No. 7 jersey left by Ronaldo. However, it seems that the Bernabeu is not Hazard's blessed land, and the king of the ball is also repeatedly injured, in the record of 70 appearances in 4 years, there are only 7 goals and 10 assists, in 2022, Hazard, who has been at the Bernabeu for three years, finally chose to leave, and this performance also made Real Madrid lose more than 1500 million euros. Of course, Hazard has now retired, and I don't know if he regrets joining Real Madrid.
If you rank unjust clubs, Barcelona and Manchester United should be on the list, while Riyadh Crescent and Real Madrid will follow.