Chelsea's pursuit of Radamel Falcao has raised a few eyebrows in England.

It's fair to say that the 2014-15 campaign was one the Colombian would like to forget, having managed just six goals in 32 games for both Monaco and Manchester United, or 34 if you count his most recent blank for Colombia against Brazil in the Copa America.

Overall last season he scored an average of 0.2 goals per game, though for United it was as low as 0.1 per game.

Yet Jose Mourinho seems undeterred, saying that it "hurts" him that the British public think of Falcao as they player they saw at United.

So was last season just a blip for El Tigre? Well, he has had a bad season before and come through it.

He began his River Plate career in the sort of blistering form that has typified his career, averaging 0.6 goals per game.

However, in his second season in Buenos Aires, Falcao managed just three goals in 20 games, an average of 0.2 per game.

Falcao's Manchester United loan spell in pictures:

That time he bounced back.

The following season he averaged 0.5 per game, and he repeated that the season after.

A year later he scored an average of 0.8 per game, then 0.9 per game the season after, before moving to Atletico Madrid where he averaged 0.7 per game and 0.8 per game in his two seasons at the club.

Of course, Chelsea don't have the best of records when it comes to signing strikers who have had knee injuries as Falcao has had.

Andriy Shevchenko famously injured his knee before his ill-fated £30m move to Chelsea back in 2006.

In his last season for AC Milan the Ukrainian striker was scoring goals at a rate of 0.7 per game.

However, in his first season at Stamford Bridge that dropped to just 0.1 per game.

Fernando Torres was also the victim of knee injuries prior to his £50m move to Chelsea.

During his time at Liverpool the Spaniard scored an average of 0.6 goals per game, whereas for Chelsea that average was just 0.2 per game.

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