The news comes after January centre-back signing Bailey Wright was ruled out 8-12 weeks with an ankle ligament injury sustained as the Black Cats defeated Oxford United 1-0 at the Kassam Stadium last Saturday.
But who could the Sunderland potentially sign? Here, we round-up the free agent options available now the transfer window has shut.
Simply scroll down and click through the pages.
Simply scroll down and click through the pages.
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