7) Robbie Keane – £19m from Tottenham in 2008 – 3/10
It’s easy to forget that Keane played for Liverpool, as his Anfield spell lasted just six forgettable months, before he was sent back to Tottenham for a £6m loss. It’s hard to entirely blame the legendary Irishman for his failure though, as at the time – our set-up simply didn’t suit him. We had Steven Gerrard playing in behind Fernando Torres, and there was no room for Keane in the formation.

