5 players you didn't know played for Chelsea 

#4 Fabio Borini (2009-2011)

Fabio Borini celebrates a Chelsea goal with Frank Lampard

When anyone mentions Fabio Borini, what instantly comes to mind is Brendan Rodgers' first signing at Anfield who went on to become a Liverpool flop. However, only a few might know that he had earlier arrived in England when he signed for the Chelsea academy from Bologna in 2007.

After two seasons of development with the youth sides, he made the step-up to the first team but found it difficult to dislodge established forwards like Florent Malouda, Didier Drogba, and Nicolas Anelka.

He spent two years on the peripheries of the first-team (chiefly due to a Hernia problem), before embarking on a loan spell to Championship side Swansea City in March 2011 but despite playing a key role in the Swans' first-ever promotion to the Premier League, the transfer was not made permanent.

A controversial move to Roma in the summer of 2011 ended his four-year association with Chelsea and in his time in West London, he made just eight appearances in all competitions and failed to find the back of the net.