FIFA transfer rules have been challenged by international players' association Fifpro after French outfit Paris Saint-Germain (PSG) made a world-record deal signing Neymar for $263 million from FC Barcelona.
Fifpro has demanded an investigation into "anti-competitive, unjustified and illegal" Fifa transfer rules, according to a Guardian report.
Neymar on Thursday inked a five-year deal with the Ligue 1 side after the player's representatives paid a record buy-out clause of 222 million euros ($263 million).
According to the report, Barcelona have submitted the details of the transaction to UEFA, the sport's governing body in Europe, with a view to determining whether there are any "disciplinary responsibilities" concerning Financial Fair Play (FFP).
On Friday, Fifpro General Secretary Theo van Seggelen said there has been a domain of a select group of rich, mostly European-based clubs who are dominating football at the moment.