10. Radamel Falcao | Monaco

Highest market value: £53m (date of valuation - January 10, 2013)

Current market value: £53m

Position: Striker

He moved to Monaco six months later for similar fee, but Falcao was at his most valuable during the previous January transfer window.

At that stage he seemed to have every top European club chasing him - including Chelsea and Manchester City.

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