#1 Fernando Torres (2011-2015)

It had to be the Spaniard, didn't it? Quite how Torres' Chelsea career turned out the way it did is a mystery that till today is difficult to explain.
Before his ill-fated time at Stamford Bridge, El Nino had been one of Europe's most deadly strikers. During his time with boyhood club Atletico Madrid and later on with Liverpool, he was a sight to behold.
With his flaming locks of blond hair, acceleration, dribbling, hold-up play and finishing, Torres was a majestic presence leading the front line alone for these clubs and in tandem with David Villa for Spain.
However, the serious injuries he had suffered in his last two seasons at Anfield seemed to sap the energy and ability from him. When he joined Chelsea in the 2011 January transfer window for a then British record fee of £50 million, it seemed a perfect move.
However, like Shevchenko, the team's style of play didn't fit his and the presence/style of the leading attackers then; Didier Drogba and Lampard meant that his room to show what he could do was curtailed.
To be fair to Chelsea, Torres was given ample chances to prove himself. To be fair to Torres himself, he tried to put in a shift and worked hard but it just never clicked for him.
While his famous injury-time equalizer in the UEFA Champions League semifinal against Barcelona is one that Chelsea fans will always remember with fondness, Torres never came close to justifying his fee and his tally of 45 goals in 172 matches shows just how bad it was.