Market Value January 1st 2012 - £625k
Market Value June 2013 - £10.5m
Difference - £9.9m
Percentage - 1614 per cent increase
Rumours of a loan move to the Bundesliga linger, but Tello will be looking to build on a solid season at the Nou Camp last term. Unbelievably quick, the Spaniard has enjoyed a memorable rise into the Barcelona first-team in the last 18 months - and his price reflects that.