CIES Football Observatory has published their list of top 100 estimated transfer values for players worldwide.
Mbappe's bumper new three year contract with Paris Saint-Germain has fired him back to the top of the list, with an estimated transfer value of €205.6million [£176m].
The France striker came close to leaving PSG for Real Madrid on a free transfer, before committing his short-term future to the club.
Not far behind is Champions League and LaLiga winner Vinicius Jr, who enjoyed a brilliant season with Real Madrid.
The 21-year-old is valued at €185.3million [£158.6m], but he only has two years left on his current contract.
New Man City signing Erling Haaland is third on the list with an estimated transfer value of €152.6million [£130.7m].
City paid an initial feel of just £51million for the superstar striker, who scored 86 goals in 89 games for Borussia Dortmund.
Barcelona star Pedri is fourth with a value of €135.1million [£115.7m], and is followed by two English stars.
Jude Bellingham, 18, has an estimated value of €133.7million [£114.5m] after starring for Borussia Dortmund and has been linked with a return to the Premier League.
Four-time Premier League winner Phil Foden is sixth on the list with a value of €124million [£106.2m] and Manchester United target Frankie de Jong [€112.5million] is seventh.
Liverpool star Luis Diaz, who only joined the club in January, has seen his brilliant performances rewarded with a place at eight on the list.
Man City's Ruben Dias is the highest defender with a value of €109.6million [£93.8m], with former City star Ferran Torres [€109.5million] rounding off the top 10.
There was no place in the top 100 for Cristiano Ronaldo or Lionel Messi, with Kevin de Bruyne (76th) the oldest player in the list.