Gerard Deulofeu | Barcelona

Market Value January 1st 2012 - £875k

Market Value June 2013 - £13m

Difference - £12.5m

Percentage - 1400 per cent increase

The Barca starlet will be looking to make a first-team impact next season - if his valuation was anything to go by you would have thought he already had. 

Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: