4) Andy Carroll (Newcastle Utd to Liverpool) - £35m

When Fernando Torres was sold to Chelsea, Liverpool needed a new striker and they ended up signing two of them. One was Andy Carroll who had impressed with Newcastle United and earned a reputation as a physical no.9 who could bully big defenders in the box.
11 goals in half a season in the Premier League prompted Kenny Dalglish to go for the 6'4" striker and most of the £50m they received from the Torres transfer was spent on the Englishman.
However, the move turned out to be a disaster for both club and player. In all, he scored only six league goals - nearly £6m per goal.
His most memorable goal was probably the late winner in an FA Cup semi-final against Everton, a goal Jamie Carragher claimed was "worth £35m" (it may have been had the Reds won the trophy but they lost to Chelsea in the final).
Carroll eventually moved to West Ham on loan before making the move permanent for a deal worth £15m - a huge loss for the Anfield side.
Oh, and the other striker who was signed to replace Torres? An Ajax player named Luis Suarez.