The Black Cats will clearly be looking to bolster their forward options at the end of the season, after missing out on multiple targets in January.
There are also other positions where the squad has looked short of options this campaign following a raft of injuries to first-team players.
Sunderland have been linked with several players over the last two transfer windows, but which of those names could they look at this summer?
We’ve taken a closer look at some of the players the club could sign and those they won’t:
9. Charlie Cresswell (Leeds) - Could happen
While Sunderland appear to have good options at centre-back, Cresswell is someone who has been on their radar in the past. The 20-year-old England U21s international has made 28 Championship appearances on loan at Millwall this season and is under contract until 2025 at Leeds. Depending on Leeds’ division status next season, another loan move may be an option. Photo: Getty Images
10. Ryan Porteous (Watford) - Won’t happen
Several Championship clubs, including Sunderland, were linked with the 24-year-old defender in January, yet Portous signed a four-and-a-half-year deal at Watford from SPL side Hibernian. Photo: Richard Heathcote
11. Jan Paul van Hecke (Brighton) - Could happen
Sunderland appeared close to signing the 22-year-old defender on loan last summer, yet Brighton opted to keep him. Van Hecke has made just three Premier League appearances for the Seagulls this season, though, and admitted he may have to move to gain more game time. Photo: Bryn Lennon
12. Bradley Dack (Blackburn) - Won’t happen
Another player who has worked with Mowbray in the past and been linked with a move to Wearside. The Black Cats boss has also said a move for the 29-year-old is ‘extremely unlikely. Dack will be out of contract at Rovers this summer, yet the club have a one-year option to extend his deal. Photo: Alex Livesey