4) Khalid Boulahrouz
The Chelsea defender will be most remembered for being handed the no.9 shirt when he first arrived in London, but he didn’t get to wear the prestigious jersey for long.
Although ostensibly a centre-back, Boulahrouz was mostly selected as a right-back by manager Jose Mourinho. He made just 23 appearances before being shipped out on loan to Sevilla just eleven months after arriving for £8.5m.
