Further signings are expected after Aiden O’Brien put pen to paper last week, with a host of players already linked with the Stadium of Light this summer.
So how could the Black Cats’ squad look on the opening day of the season if the rumours are true? Scroll down as we take a look:
13. SUB: Tom Flanagan
Having signed a new deal with the Black Cats, Flanagan will yet again be a key man in the first-team fold. Photo: JPI Media
14. SUB: Conor McLaughlin
The Northern Irish international proved a useful squad option last season, with his versatility a useful asset. Photo: FRANK REID
15. SUB: Josh Scowen
We've yet to get a proper look at Scowen after his mid-season arrival, but he could prove a key man as we move into the new campaign. Photo: Frank Reid
16. SUB: Chris Maguire
Maguire has agreed a one-year extension on Wearside and will be hoping to continue his renaissance under Phil Parkinson as we move into the 2020/21 season. Photo: Frank Reid