We round up some of Sunderland's worst pieces of transfer business.
With the January transfer window just opening, we take a look at some of the dealings that Sunderland have previously done which they will be hoping to forget about.
It's still not quite clear why Sunderland decided to part with £5 million to sign Danny Graham back in 2013, but they obviously felt like it was a good idea at the time.
Graham had scored three goals in 18 games for Swansea City in the season prior to joining the Black Cats and his scoring record actually got worse after arriving at the Stadium of Light.
Graham has only gone on to play 12 times for Sunderland and he is yet to hit the back of the net for the club.
The 29-year-old looks set to leave during this transfer window and Sunderland will do well to recoup even a tenth of what they paid.
It's unusual that a free transfer doesn't represent value for money, but Cabral may actually be one of those rarest of signings.
Although he was brought in at little expense, the central midfielder has made just one appearance during his stay in the North East - which has now lasted over a year.
Cabral did score in the Asia Cup during his first pre-season at the club, mind, so perhaps he can claim to have been better than Graham.
The fact that Sunderland are still trying to persist with Jozy Altidore sums up their attacking problems at the minute.
A striker who appears to fall to pieces in the box, Altidore has just one Premier League goal in 41 appearances. £6.5 million well spent...
Tore Andre Flo
Tore Andre Flo arrived at Sunderland for £6.75 million and left on a free transfer just 18 months later.
Those figures provide a brief summary of how things went for Flo in the North East, as he failed to ever show any of the quality which made him a decent Premier League striker at Chelsea earlier in his career.
The Norwegian target man managed just four goals in 29 appearances for Sunderland and goes down as one of the biggest disappointments in the club's history.
At the time, Gordon was the most expensive British goalkeeper ever, setting Sunderland back £9 million in 2007.
He was to spend seven years with the Black Cats, but a series of injuries stopped him from ever fulfilling his potential.
Since leaving the club in 2012, on a free transfer, he has worked on his injury problems and is now earning numerous plaudits because of his performances at Celtic. Typical.