Over the years, the Premier League has seen some big transfers.
In fact, three world record transfer fees were spent on players on this list.
These transfers didn't provide much value for the money, showing that more money doesn't always get you better results.
The signings on this list are big money deals that have failed rather than just poor signings.
So, here's a list of 10 of the biggest busts in the history of the Premier League transfer market.