The French champions paid Barcelona 222 million euros for his signature in 2017. The top five was rounded off by Barca youngster Pedri (135.1 million euros) and Borussia Dortmund's English midfielder Jude Bellingham (133.7 million euros). The CIES Football Observatory uses such indicators as player age, performance, career progression and contract duration to arrive at a transfer value. City's Ruben Dias (109.6 million euros) had the highest transfer value for a defender while PSG's Gianluigi Donnarumma (73.7 million euros) led among goalkeepers. City playmaker Kevin De Bruyne, 30, was the oldest player on the list, with a value of 57.3 million euros.
