5. Radamel Falcao
Falcao has established quite a formidable reputation in recent seasons, with the Colombian international proving himself to be one of the world's most-prolific strikers during successful spells with FC Porto and Atletico Madrid.
The 27-year-old left the Vicente Calderon this summer, having been coaxed to Ligue 1 by the financial might of Monaco for a reported fee of £50 million.
If he continues to perform at such an elite level under Claudio Ranieri, it is not beyond possibility that someone could offer double that fee in the future.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms