The CIES Football Observatory analyzed the summer transfer window 2018/19 in order to determine the best bargains.

The purchase of Real Madrid goalkeeper Thibaut Courtois from Chelsea has become the best investment of the summer, according to the Football Observatory CIES.

"Blancos" was able to sign a 26-year-old Belgian for 40 million euros, which is 22.6 million euros less than its "fair" value, which was calculated using the algorithms CIES.

The top three most profitable summer investments also included the transfer of Rodri from Villarreal to Atletico and Brian Kristant from Atalanta to Roma.

An advantageous investment was also the transfer of Cristiano Ronaldo from Real Madrid to Juventus for 105 million euros, while his "fair" value was 116.5 million euros.

TOP-10 most profitable summer purchases 2018 Player Location -> Where A B C Thibault Courtois Chelsea -> Real Madrid 40. 0 62. 6 -22. 6 Rodri Hernandez Villarreal -> Atletico 25. 0 46. 9 -21. 9 Brian Kristante Atalanta -> Roma 30. 0 49. 4 -19. 4 Fabino Monaco -> Liverpool 55. 0 73. 8 -18. 8 Clement Lengle Seville -> Barcelona 35. 0 49. 2 -14.

2 Raja Nainggolan Roma -> Inter 40. 0 52. 9 -12. 9 Lucas Torreira Sampdoria -> Arsenal 30. 0 41. 9 -11. 9 Cristiano Ronaldo Real Madrid -> Juventus 105. 0 116. 5 -11. 5 Simone Dzadza Valencia -> Torino 14. 0 24. 1 -10. 1 Alban Lafont Toulouse -> Fiorentina 8. 5 18. 4 -9. 9 A - Transfer amount, B - "Fair" price, C - Difference (millions of euros) Do you want to learn the main football news first? Subscribe to our channel in Telegram! You can also follow our site on Facebook and Twitter.