Rvp most certainly didn't leave for money, as difeo said city were offering a much higher wage package, I don't blame him for leaving after Wenger said he wouldn't be investing for a few years but the open letter to the fans was disgraceful and could have cost us a lot of money. It's also universally accepted that Fab would have come back had he been offered a spot, so his options were united or Chelsea and he picked the best option for winning the league clearly. Footballers from foreign countries don't have to be loyal to arsenal you know, especially if it's clear we wouldn't be spending anytime soon.
However atom does have a point about hindsight clouding your judgement, he was known as a poor injury prone striker who constantly took greedy shots from outside the box when other options were available with a piss poor attitude off the pitch for much of his career at arsenal it was only in the last 2 or 3 season really where he showed what he could do, don't think he'd ever really be classes as a "pl legend" though