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:
5. John Buckley (Blackburn) - Won’t happen
Mowbray gave Buckley his debut at Blackburn, fueling reports Sunderland are interested in the 23-year-old midfielder. The Sunderland boss has said a move is ‘very unlikely’ though, adding "If Blackburn were to sell him that would be a lot of money." Photo: Lewis Storey
6. Andras Nemeth (Hamburger SV) - Won’t happen
A highly-rated striker who was on Sunderland’s radar in January but instead signed a three-and-a-half year deal at German side Hamburger SV. Photo: Boris Streubel
7. Sam Surridge (Nottingham Forest) - Could happen
Multiple injuries in Forest’s squad meant the 24-year-old striker couldn’t be loaned out in January. Sunderland were strongly linked with Surridge, who remains on the fringes at the City Ground, and the forward may be allowed to leave this summer with a year left on his contract. Photo: PAUL ELLIS
8. Jonson Clarke-Harris (Peterborough) - Won’t happen
Peterborough owner Darragh MacAnthony has claimed former Sunderland boss Lee Johnson wanted to sign Clarke-Harris when the Black Cats were in League One. The 28-year-old was linked with the Black Cats again in January but is another striker who doesn’t fit the profile of what the club are looking for. Photo: Catherine Ivill