3. Simon Mignolet | Sunderland to Liverpool | £9,000,000
In my opinion, Simon Mignolet is one of the best goalkeepers currently playing in the English Premier League.
He is a young Belgium international who is a great shot-stopper and brilliant at making decisions. During his time as Sunderland's number-one, he rarely made glaring errors and he was always a safe pair of hands for The Black Cats.
Signing Mignolet has allowed Liverpool to let Pepe Reina go out on loan to Liverpool and he will be a key player for The Reds in the upcoming season.