2) Jerome Boateng, £10.4 million to Manchester City 2010

Jerome Boateng is now one of the best centre backs in European football, but his time in the Premier League will always be a time he’d like to forget.
The German’s City career started in the worst way possible. He tore a tendon in his left knee on international duty, and it would keep him out for the start of the season 2010/11. His season then never got started properly as Vincent Kompany and Kolo Toure were always above him in the pecking order, with him mainly playing at full back.
He made just 14 starts and two sub appearances in the Premier League and moved to Bayern Munich the following summer, where he has now won a Champions League and five successive league titles, making 137 Bundesliga appearances for one of the biggest teams in Europe.