I thought this was about you being bored of buying players. Fail.
If you want to buy players like Bale then be Man City, United aren't super-rich, especially in the first season. The board won't sanction transfers if they just cannot afford it. If you've completely spent your budget with no success and no outgoing players then why would they bother throwing £50m+ at Bale for you.
Actually play the game for longer than a season and maybe you will be able to buy Bale and Ribery. Or, you could just use FMRTE, you might benefit from that.