#3 Kostas Mitroglou
Olympiakos - Fulham
Date of arrival - 31 January 2014
Transfer fee - £12m
Having established himself as a decent goalscorer in the Greek Super League with Olympiakos, English side Fulham paid £12m (a then club record) to the Greek side for the services of Mitroglou.
The London club were facing the prospect of relegation, leading then manager Rene Meulensteen to state that Mitroglou's goals would be crucial to the Cottagers avoiding the drop.
As it happened, that proved to be far from the case, as the Greek international was plagued by a series of nagging injuries which massive affected his impact on the field.
The 30-year-old was restricted to just three Premier League appearances scoring zero goals, with Fulham, of course, going on to be relegated at the end of the season which was a rather poor return for the massive investment that was made into getting him.