Manchester City's extraordinary forward Sergio Aguero has never come cheap. Since bursting onto the scene with Independiente at just 15 years old back in 2003, the Bernal native has enjoyed two lucrative transfers.
Atletico Madrid shelled out an estimated €20 million for the teenager's services in 2006, according to ESPN FC, smashing the record previously set for Italian hit man Christian Vieri.
That massive sum for a kid still only 17 may have been a gamble, not least for a club looking to replace a striker of Fernando Torres' calibre. But Aguero soon proved he had the mettle for La Liga.
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