FIFA are investigating a complaint by French side Rennes against Manchester City over the signing of 17-year-old defender Jeremy Helan.
Rennes made their complaint after City signed the French teenager earlier this year.
FIFA said in a statement: “We can confirm that there is a case pending with FIFA’s Player Status Department involving Jeremy Helan, Stade Rennais FC and Manchester City.”
City are expected to strongly contest the complaint, and are likely to argue that there was already a civil court dispute in France between Helan and Rennes before they signed the teenager.