Yuri Zhirkov (Sold to Anzhi Makhachkala for £13.2m, 2011)
FAILURE – The Russian international failed to make the grade at Chelsea and has since struggled to revive his career in his home country.
Daniel Sturridge (Sold to Liverpool for £12m, 2013)
SUCCESS – After being allowed to leave Stamford Bridge, Sturridge has become a firm favourite at Anfield, scoring 37 goals in 56 games.