1. Harry Maguire (Le Leicester to M.U, 93 million Euros)
After much speculation, M.U has successfully signed Harry Maguire from Leicester City for a transfer fee of €93 million, making the 26-year-old Englishman the most expensive defender in the world. The 1993-born rookie signed a 6-year contract with his new team, with an automatic extension of one more year until the summer of 2026.
2. Virgil Van Dijk (Southampton to Liverpool, 85 million Euros)
Coming to Anfield from Southampton for a record fee. Van Dijk has quickly proven his worth. Van Dijk's good form last year was the main reason why Liverpool achieved certain successes. Thanks to a solid defense, Juergen Klopp's Red Brigade finished in 2nd place in the Premier League. In the European arena, they officially added to their trophy cabinet the 6th Champions League championship in history after defeating Tottenham.
3. Lucas Hernandez (Atletico to Munich, 80 million Euros)
The German "Gray Tigers" - Bayern Munich had to spend 80 million Euros to recruit defender Lucas Hernandez from Atletico Madrid, making him the most expensive player of all time in the Bundesliga.
4. Matthijs De Ligt ( Ajax to Juventus, 80 million Euros)
In 3 seasons playing for Ajax, De Ligt scored 8 goals in 77 appearances and was a mainstay in the Dutch team's defense. He became the youngest captain in the club's history in March 2018. De Ligt scored the decisive goal against Juventus in the second leg of the 2018-2019 Champions League quarter-finals to take Ajax to the next round. De Ligt's impressive achievements have forced Juventus to spend big to get him.
5. Aymeric Laporte (Bilbao to Man City, 65 million Euros)
The French defender did not take much time to adapt to the English football environment. Laporte made 29 appearances last season and helped Man City successfully defend the Premier League title against fierce competition from Liverpool.
6. Benjamin Mendy (Monaco to Man City, 57 million Euros)
Despite his continuous injuries, Mendy still has 2 Premier League titles with the Etihad team.
7. Aaron Wan-Bissaka (Crystal Palace to M.U, 55 million Euros)
Wan-Bissaka is a mainstay of the team that impressed in the Premier League, Crystal Palace, last season. The 21-year-old, a British national (having played for the England U20, U21 sides) is considered one of the most promising full-backs in Europe at the moment.
8. Kyle Walker (Tottenham to Man City, 52.7 million Euros)
The 28-year-old joined Man City from Tottenham, has the ability to play as a right-back, but under Pep Guardiola, he also impressed with his good play in the center-back role alongside John Stones and Aymeric Laporte.
9. John Stones (Everton to Man City, 52.7 million Euros)
The English centre-back arrived at the Etihad from Everton and impressed with his sharp tactical thinking and effective passing ability.
10. David Luiz (Ch Chelsea to PSG, 50 million Euros)
In the summer of 2014, coach Mourinho directly sold David Luiz to PSG and earned a huge sum of money. Despite not possessing such impressive defensive skills, David Luiz still convinced Chelsea to spend 49.5 million Euros to welcome him back to Stamford Bridge. The Brazilian has contributed greatly to the Blues' 2016 2017 Premier League title with a strong playing style, accurate long passes and effective long-range shooting.