Click your way through the gallery, and see where all the players Sunderland bought and sold back in the 2009/10 campaign are now...
13. Darren Bent - Bought from Spurs
The ex-England striker scored an impressive 36 goals in 63 games for the club, but never recaptured that form in subsequent spells with the likes of Aston Villa and Derby County. He now works as a pundit. (Photo by Shaun Botterill/Getty Images) Photo: Shaun Botterill
14. Dean Whitehead - Sold to Stoke City
A key Black Cats defender for five seasons, he eventually left to join Stoke City. He finished his career with Huddersfield in the Premier League, and is now the Terriers' U17 coach. (Photo by George Wood/Getty) Photo: George Wood
15. Oumare Tounkara - Joined on free transfer
The Frenchman never made a competitive start for Sunderland, largely due to injury problems. He left in 2012 and spent some time Bristol Rovers and Stevenage, and is now playing for Romanian side Astra Giurgiu. (Photo credit: GUILLAUME SOUVANT/AFP/Getty Images) Photo: GUILLAUME SOUVANT