Its not a case of the clubs finance's, I believe its players being lured away thats the problem. For example, Man United offereing Berbatov 72,000 home fans every match, European football every year of the highest level, a damn good salary, world class team-mates against world class opponents, silverware...
Look where Carrick is now, he's just picked up his first major honor [a league winners medal], he got to the Champions League Semi-Final and is playing in the FA Cup final next weekend. Not bad when a year ago his chances of playing in the Champions league were smashed by this years relegation survivors.