10) Salomon Kalou
Kalou arrived at Stamford Bridge from Feyenoord in ’06. Tipped for great things in his career, Kalou went on to play 156 games for Chelsea winning a Premier League title and Champions league title. Despite his illustrious trophy cabinet, Kalou never really established himself as a goal-scoring threat. He played 84 minutes in the Champions league final against Bayern; however, Chelsea’s best moment came after Kalou was taken off. He left the club the following season joining Lille in France. After two mediocre years in Ligue 1,Kalou joined Hertha Berlin in Germany.