There is no denying that Mourinho had a huge impact on Manchester United during his time at The Manchester United, he was the last manager to win a title for Manchester United, and the reasons for leaving the Manchester United club are very complicated. During his time at The Manchester United, Mourinho brought 11 players to Old Trafford at a cost of £378 million, with everyone having had varying degrees of success at Manchester United club or now, the Manchester Evening News reviewed Mourinho's signings at Manchester United and considered them all to have had varying degrees of success.

The introduction of Bailey from Villarreal cost £34 million
Mourinho's first signing under Manchester United was Glassman Bailey, who remains a Manchester United player and whose contract will not end until 2024. Bailey proved to be a top midfielder before being chased by Ibrahimovic, and after Ibrahimovic left Manchester United, Bailey suffered frequent injuries and gradually lost his main position, and gradually appeared unstable.
The overly presumptuous Bailey is still at the giant level in terms of range of motion, steal ability and confrontation ability. It's just that Bailey is destined to be United's fourth centre-back.
Ibrahimovic was introduced from Paris Saint-Germain and transferred freely
Ibrahimovic is considered one of the most successful signings during Mourinho's tenure, but Ibrahimovic's career at Manchester United withdrew with a ligament injury, and Ibrahimovic's departure also allowed Mourinho's Manchester United to decline from Europa League title and league runner-up.
Ibrahimovic joined Serie A's AC Milan from Major Leagues in 2020, and the 40-year-old is still a fearsome striker in the top five leagues, scoring seven goals in Serie A this season, ranking ninth in serie A's top scorers list.
Mkhitaryan, imported from Dortmund, £30 million
Mkhitaryan is a side-back whose role on the pitch is very similar to Sancho's, and he joined Manchester United with the Bundesliga assists king hat. Just as Shinji Kagawa joined Manchester United as a side-back, Mkhitaryan brought a role to Manchester United, but could not replicate the success of the Dortmund era.
United are not accustomed to using the side-back, but use Mkhitaryan as a winger, just as Sancho did in the early days of Joining United. After 18 months with Manchester United, Mkhitaryan moved to Arsenal as part of United's deal to bring in Sanchez. After 18 months at Arsenal, Mkhitaryan was loaned to Roma and has now moved to Roma permanently.
Paul Pogba was introduced from Juventus, £89m
The introduction of Pogba was Mourinho's biggest signing under Manchester United, and it also set a transfer record for England at that time. Now that Pogba's five-year contract is about to expire, it's hard to say that the cost of bringing in Pogba has been recouped, as Pogba's performance during his time at Manchester United has been very erratic.
Pogba, who has yet to renew his contract, is uncertain about his future at Manchester United and is likely to have another free transfer to another team.
Lukaku was introduced from Everton, £76m
United did not lose money from Lukaku's signings, with Mourinho bringing in Lukaku after Ibrahimovic left Manchester United and the Belgian scoring 42 goals in 96 games. In Ole Gunnar Solskjaer's first full season in charge, in order to support the main positions of Martial and Rashford, Ole Gunnar Solskjaer sold Lukaku to Inter Milan for 80 million euros, making great contributions to Inter Milan's Victory League. And United didn't lose money either, maintaining a tie on Romelu Lukaku's transfer fee.
Today, Lukaku has joined Chelsea with a transfer fee of 100 million.
Fred was introduced from the Donetsk miners, £47 million
Fred was once considered a parallel to Mourinho's signings and struggled very hard in the club's first year, yet Fred has become an indispensable midfielder for United and looks to improve every season, winning 57% of the games in Fred's starts this season, more than a dozen percentage points more than Fred's missed games.
It looks like Fred will be an important part of Lonnick and will remain a regular on United's starting list.
Matic, introduced from Chelsea, £40m
It was one of Mourinho's most successful signings, with the 33-year-old midfielder still in United's rotation role and his contract due to expire in 2023. Nemanja Matic is currently the only pure back in manchester United, unlike Fred who has changed from the front to the back and Mike Jr. from the midfield to the back, Matic's sense of position and forward shooting ability are still top-notch.
Lack of physical fitness and running power limited Nemanja Matic to continue to be the main player, and he could only play in cup competitions or in league rotations.
The introduction of Lindelof from Benfica, £31 million
Lindelof encountered great difficulties in the early days of joining Manchester United, and his appearance was once ranked behind Bailey, Jones and Smalling, so that Mourinho still wanted to bring in a central defender in his final season at The United. However, Lindelof gradually began to stabilize as he played more and more games, and this season even far surpassed Maguire.
It looks like Lindelof will remain a regular fixture in United's starting list, especially when Varane is prone to injury and Maguire is somewhat unstable.
The introduction of Sanchez from Arsenal, player exchange
It is widely believed that Mourinho's dressing room imbalance is the source of the imbalance, and the weekly salary of hundreds of thousands of pounds has caused United's salary structure to start to be unbalanced, scoring only 5 goals in 45 appearances. After 18 months with Manchester United, Sanchez joined Inter Milan on loan, and then in order to quickly stop the loss, Manchester United allowed Sanchez to join Inter Milan for free.
Imported Dalot from Porto, £19 million
When Mourinho brought in Dalot, Dalot was a young player under 20 years old who couldn't get too many opportunities under Mourinho and Ole Gunnar Solskjaer. Dalot is better at assists than lateral defense, and with emphasis on full-back defensive ability, Dalot doesn't get too many chances.
Ronnick seems to prefer Dalot's offensive attributes to Wan Bissaka's defensive attributes, and in the three games that Rangnick has coached, Dalot has made 2 appearances and looks like he will gradually become a regular in the starting lineup.
Grant, free transfer
Mourinho brought in Grant as a third goalkeeper, and the 40-year-old Grant is ready to join the Manchester United coaching staff as a goalkeeper coach.