#1 Paul Pogba

Jose Mourinho signed Paul Pogba from Juventus in 2016 for a then world record transfer fee of €105 million.
The French international started his professional career with the Red Devils, but failed to make the grade at the club. He moved to Juventus in search of a regular first-team football and then became the most sought-after midfielder in the world within a few years.
The FIFA World Cup 2018 winner returned to the Old Trafford in 2016 and has become one of the most important players for the team. He won the EFL Cup 2016-2017 and also lifted the UEFA Europa League trophy in his first season with the club. Pogba was the UEFA Europa League Player of the Season 2016–17.
However, there is speculation about him being unhappy at the club, and we might see him leaving Old Trafford for the second time in his career.