14) Didier Drogba
Signing a 36-year-old to replace Romelu Lukaku never looked the best idea for Chelsea, and Didier Drogba lasted just one season back at the club in a second spell.
13) Radamel Falcao
Signed on loan this summer, Radamel Falcao looks a very risky signing for Chelsea, though if he regains his best form he will end up being a brilliant addition. At this stage, it’s hard to know how this one will go, but based on last season it doesn’t look the best choice by the Blues.
12) Samuel Eto’o
Another striker brought in when past his best, Samuel Eto’o lasted one season in the Premier League, and did well enough as a squad player, with a hat-trick against Manchester United the highlight.
