Chelsea face an investigation over their Feyenoord deal for Nathan Ake.
The Sun says Blues are at the centre of a Dutch FA investigation into their controversial swoop for the 15-year-old Feyenoord starlet.
The inquiry centres on the Blues' £670,000 signing of highly-rated youngster Ake and the role played by agent Dan Kramp of Holland's Forza Fides agency.
The transfer has sparked fury in Holland where strict FA rules outlaw children under 16 from having agents.
Dutch PFA spokesman Danny Hesp told The Sun: "The rules clearly state that agents can't do anything with children under 16.
"Yet this agent turns up with a 15-year-old at Chelsea so the FA has got to tackle this issue."
