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1. Harry Brockbank
The 20-year-old Bolton defender is highly rated and could be available at a cut price given Bolton's financial woes. Premier League Burnley could scupper any potential Sunderland move, however.
2. Marcus Maddison
North-East born Marcus Maddison recently hinted at the possibility of signing for his boyhood club on Instagram and has been heavily linked with a move to Wearside for over a year.
Photo: Ker Robertson
3. John Marquis
The Doncaster Rovers striker is available for £1m with Sunderland reportedly keen to do a deal.
Photo: Clive Rose
4. Macauley Bonne
Sunderland had been linked with the prolific striker but Charlton swooped to make Bonne their first summer signing - forcing Sunderland to look elsewhere.
Photo: Jordan Mansfield