Loads of people having this debate in a transfer thread but I think it's a topic worthy of it's own thread. My tuppence worth - yes I believe it does, especially in these days of money grabbing footy player whores. It does, however, have to be spent wisely. I think Mourinho did that at Chelsea. It's obvious Barcelona have. City though I reserve judgement about. There's no doubt they're a vastly improved team but, as others have pointed out, they lack consistency and they seem to buy for buying sake at times and appear very wasteful. They've got more strikers than any club in the league yet they're forever linked with more.
So my answer - yes, if invested wel, money buys you success.
So my answer - yes, if invested wel, money buys you success.