The 48-year-old was linked with the managerial vacancy back in December when the Black Cats were looking to replace Tony Mowbray.
Instead, Sunderland opted for Michael Beale who has already been dismissed by the Championship side.
Beale’s departure could open the door for an attempt to bring Potter into the club as his replacement.
Grayson claims Potter move is unlikely
Grayson, who managed Sunderland in 2017, has suggested that it will be very difficult to convince Potter to take the step down to the Championship.
While he believes it would be a great appointment, he expects the ex-Chelsea boss to make his return to management with a top-flight club.