- Jadon Sancho (Dortmund – MU)
Jadon Sancho’s move to Manchester United in the summer of 2021 for a fee of £73 million was highly anticipated. However, the young midfielder failed to make a significant impact and often found himself on the bench, even under the guidance of new coach Ralf Rangnick.

Sancho’s impressive performances at Dortmund were nowhere to be seen at Old Trafford. However, under the tutelage of Erik ten Hag, Sancho has shown some promising signs of a revival, and fans are hoping that he will regain his form and start scoring goals again.
- Timo Werner (RB Leipzig – Chelsea)
When Timo Werner joined Chelsea for £53 million, he was expected to be the club’s main striker. However, the German international struggled to adapt to the Premier League and failed to deliver the goals that were expected of him.

After playing 89 matches for the club, Werner scored only 23 goals, which was not enough to justify his price tag. He lost his place in the starting line-up and eventually returned to his former club, RB Leipzig, in the summer of 2022.
- Henrikh Mkhitaryan (Dortmund – MU and Arsenal)
Henrikh Mkhitaryan was highly regarded for his impressive performances at Borussia Dortmund, where he was the Bundesliga’s top assist provider in the 2015/16 season.

However, his move to Manchester United in 2016 did not work out, and he struggled to make an impact at the club. Mkhitaryan moved to Arsenal in 2018, but he failed to revive his career and left the club in 2021.
- Sebastien Haller (Frankfurt – West Ham)
Sebastien Haller’s impressive performances for Frankfurt earned him a move to West Ham for a club-record fee of £45 million.

However, the Ivorian striker struggled to find his form in the Premier League and managed to score only 10 goals in 48 matches over two seasons. He failed to live up to the expectations of the fans and eventually left the club.
- Kai Havertz (Leverkusen – Chelsea)
Kai Havertz was one of the most highly regarded young talents in the Bundesliga when he joined Chelsea from Bayer Leverkusen for a fee of £71 million. However, he struggled to adapt to the physicality of the Premier League, and his performances were below par. He managed to score only seven goals in 26 matches this season, which was disappointing for Chelsea fans.

Last season, he was seen as the perfect replacement for Romelu Lukaku, but he only managed to score eight goals in 29 matches.
In conclusion, these players may have been highly regarded in their former clubs, but they struggled to adapt to their new surroundings and failed to deliver the performances that were expected of them. It goes to show that football is not just about individual talent, but also about how players fit into the team and the environment they are in.