Manchester City could get hit with a transfer ban after emerged FIFA are investigating their recruitment of young overseas players.
Premier League giants and City’s opponents in the Carabao Cup final Chelsea cannot sign anyone until 2020 after breaching the rules on 29 occasions.
The Blues have launched an appeal against the punishment which has also seen them fined £460,000 and the future of a number of players are uncertain.
English football’s governing body the Football Association have also fined the Premier League £390,000 for failing to police the system.
FIFA are looking at the registration of youngsters in an attempt to protect them from exploitation and trafficking.
The use of the international transfer certificate has been central to the breaches with players allegedly participating in organised matches without such documentation.