Velez Sarsfield has warned Manchester City over their swoop for Benjamin Garre.
The teen has committed to City, despite previous trials with Manchester United.
The Mirror says Velez have revealed they intend to report City to FIFA over the signing of Garre.
City beat United and Barcelona to sign the 15-year-old earlier this week.
Velez refused to allow the player to travel to England but the player intends to fly to Manchester.