"Correct" transfer fees

[KirkDuyt]

Gakpo was 40 million. Seems somewhat fair.

 

[Gazza]

David De Gea for £19M. A lot of money, well spent.

 

[B. Munich]

Musiala for 200k Euro was a steal. Thanks Brazzo and Chelsea.
Sorry couldn't resist.

On a more serious note. Olise for 50 million is about market price these days.