Credit to Arsenal, and this signing shows that in this market, you need to either pay up or feck off. By all accounts, Madrid were not interested in dealing on the cheap, and Ozil himself demanded a high salary. Reports also suggest he was initially unsure about joining Arsenal, yet they just went out and did what it took to get it done.
We're the most toothless big club in the market by some distance, expecting to do business with the currency of 'players must have a desire to play for United'. If we struggle on the field with Fergie gone, and do not add top quality, it will become even harder to attract top players. We are already more likely to lose out to London competition by virtue of players prefering to live in London.