3. Massimo Taibi: £4.5m from Venezia
This time around we have a goalkeeper on the list and an awful one at that.
Massimo Taibi moved to Manchester United from Venezia for £4.5 million and only spent one season at Old Trafford, making just four appearances.
However, those four appearances were riddled with costly and embarrassing errors.
The Italian retired from professional football in 2009.
