Financial fair play

Yeah. City really came a cropper when they fell foul of that rule.
And what City and Chelsea do is buy players and then loan them out so competing clubs can't have them. In City's case the owners have bought other clubs to stockpile players.
Whatever you think about the move from Highbury there's no way we'd be anywhere near the top 4 had we not moved. And no manager is getting sacked having just won a major trophy and finished with the most points for 6 years.