8) Jerome Boateng
Not many remember Jerome Boateng playing in the Premier League. Although he arrived in England for £10.4m and signed a five-year deal, he was gone within a year. An injury on international duty even before the 2010/11 season got underway meant that he did not make his debut until September.
The defender could play at right-back or centre-back. Averaging 2.8 tackles per game (the highest in his career) at City, he never felt at home in England and requested a transfer to Bayern Munich as he felt that was his ticket to the German national team.
The results are there for all to see. Boateng has since won the World Cup with Germany apart five Bundesliga titles and a Champions League title with Bayern He was also selected for the Bundesliga Team of the Season twice.
Boateng is 28 and currently at his peak. If any club can convince him that he has won all he can with Bayern (apart from giving him a higher wage packet), the defender would improve any back line in England.