2017 transfer window saw a many world records set and broken with the most notable being the most expensive transfer in history. Ever since the record breaking transfer of Gareth Bale from Tottenham Hostpur to Real Madrid, there is have been speculations that more records would be broken.

Here is a list of the 20 most expensive transfers in football history
http://nexusvibe.com/world-expensive-top-20-most-expensive-football-player-in-the-world/