FIFA could threaten City's ability to progress in their quest to win the Champions League, as more revelations come to light following information from 'Football Leaks'.
Financial Fair Play has been an issue for the club, but there could be even more danger on the horizon.
The source claims that FIFA could dish out a one-year transfer ban on the 'Citizens' as a result of the sigining of 14 youth players, which are seen as suspicious.
FIFA has given similar bans to Barcelona, Atletico Madrid and Real Madrid in recent seasons, even though 'Los Blancos' eventually managed to get out of the punishment.