England youngster Jadon Sancho's transfer value has increased by almost €80million in the last three months, more than any other player in Europe's top five leagues, according to the CIES Football Observatory.
The International Centre for Sports Studies (CIES) publish regular estimations of transfer values, taking into account a variety of factors, including age, contract length and the economic level of potential buying clubs.
Their new report ranks the twenty players from across Spain, Italy, Germany, France and England, whose values have increased the most since the start of September.
Sancho tops the list with an estimated worth of €87.9m, up from just €9.7m at the start of September, an increase of more than 800 per cent.
During that time, 18-year-old Sancho has become a key player in Borussia Dortmund's superb start to the season, scoring six goals and picking up nine assist in 21 games, as well as making his England debut.
Juventus full back Joao Cancelo has shown the next biggest increase in value, up €46m to €75m.
Liverpool defender Andy Robertson is third, having reportedly agreed a new deal at Anfield and been named Scotland captain, and is now said to be worth almost €80m.
Another Merseysider, Everton's Richarlison, is fourth most improved, up €31m, with PSG full-back Thilo Kehrer completing the top five.
Several other Premier League players feature in the top-20 list, including Manchester City duo Aymeric Laporte and Bernado Silva, Liverpool pair Trent Alexander-Arnold and Sadio Mane, as well as England new boys Callum Wilson and Ben Chilwell.
French World Cup star Kylian Mbappe has the highest value of any player on the list at €216.3m.
