But which former Black Cats stars are now free agents having been released by clubs and which players will see their deals expire soon?
Here, we take you through all of the ex-Sunderland players who have been released or are soon to be released.
Are there any realistic targets that the Black Cats could look to re-sign?
Scroll down to take a look at the list:
13. Donald Love
The former Sunderland and Manchester United man was recently released by League One club Shrewsbury Town. Photo: Pete Norton
14. Jack Rodwell
Probably Sunderland fans' least favourite player of the 21st Century, Jack Rodwell's contract at Sheffield United is due to expire this summer. Photo: PETER POWELL
15. Danny Welbeck
Welbeck, who spent time at Sunderland under Steve Bruce on loan, will be out of contract at Brighton this summer. However, manager Graham Potter Potter confessed that the former Manchester United man is valued by the club and in line for a new deal. “Danny, it will be too soon for him but he will take the break for the summer and be ready for pre-season,” he added. “That (a new contract) is something the club will be speaking with Danny about and they are speaking. We are happy with what Danny’s done and he’s contributed to us.” Photo: Gareth Fuller - Pool