David Luiz (PSG to Chelsea) – £30m:
The Brazil international who made a £50m move to PSG a couple of years ago, was not even in the frame of the transfer window for Chelsea throughout the two months. However, he was linked to the club on the penultimate day a completed him move on deadline day in a bizarre manner.
However, it is believed that he is well past his best and that Chelsea may have overpaid up to £17m for their man on deadline day.