Mauro Icardi | Sampdoria

Market Value January 1st 2012 - £175k

Market Value June 2013 - £8.8m

Difference - £8.6m

Percentage - 4900 per cent increase

The former-Barca youth team player will cap a superb 12 months by moving to Inter Milan this summer. He's gone from Nou Camp reject to Serie 'A' starlet faster than you can say La Masia.

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