4. Gareth Bale | Real Madrid

Highest market value: £70.5m (d.o.v - September 17 2013)

Current market value: £70.5m

Position: Winger, Forward

According to transfermrkt.co.uk, Real Madrid overpaid for Gareth Bale - a sentiment many of you probably agree with.

If any case, he's already one of the most valuable of all-time thanks to football's inflation-busting transfer market.

Lionel Messi
Cristiano Ronaldo
Wayne Rooney