Right now, it's easy to look at Manchester City and proclaim that they're only where they are because they've spent huge wads of cash.
Of course, having an endless pit of money helps when it comes to having success, but City aren't the only club guilty of splashing the cash in order to try and conquer all in front of them.
Over on the red side of Manchester, and City's famed rivals have never been afraid to pay massive fees in order to get their chosen transfer targets.
To be fair to Manchester United, the huge transfer fees involved for players such as Denis Law, Bryan Robson, Gary Pallister, Roy Keane, Ruud van Nistelrooy, Rio Ferdinand, and Wayne Rooney all proved to be worth the extensive cost as these players led the Red Devils to plentiful trophies during their time at the Theatre of Dreams.
On the other side of that, however, there are those big-money deals that end up being a painful, desperate flop on a whole host of levels for all involved.
With that in mind, then, we're going to explore ten of the most expensive flops to have ever made their way to the Theatre of Dreams over the years.