#3 Eliaquim Mangala

Once the most expensive defender in British football, Eliaquim Mangala is now a fringe player at Manchester City, with only 2 appearances to show for in the Premier League, this season.
A hefty signing from Porto and touted to be the next superstar defender of French football along the lines of Lilian Thuram and Marcus Desailly, Mangala had a streak of horrible performances after his big money move to the Etihad and was subsequently dropped and became a forgotten figure at Manchester City. Whether it was the pressure of the price tag or a failure to adjust to the Premier League remains unknown. All we know is that the beast of a defender he looked at Porto, was no longer to be seen.
He was sent on loan to Valencia last summer, hoping that the move would ignite his career, but it again proved to be a very below par season for the Frenchman, with a red card against Barcelona for a horrible tackle on Luis Suarez being the highlight of his season. Valencia's fall into the lower half of the La Liga table was comparable to Mangala's own fall from grace, but unlike Valencia, there doesn't seem to be a revival on the cards for Mangala this season.
Back at Etihad this season, it looks like Mangala will be offloaded at any opportunity after being deemed surplus for requirements for quite a while now. Not the career trajectory that was expected of the big burly defender after his showings at Porto. Unless he can impress in his meagre appearances for the club, of course.