Newcastle United play host to Luton Town in the third round of the FA Cup on Saturday.
Nathan Jones has already been in charge of Luton for over 100 games. The last manager to do that at Sunderland was Roy Keane.
Sunderland sacked manager Simon Grayson last week.
Luton Town boss Nathan Jones is on the radar of Sunderland - and his teenage full-back James Justin, a summer target for Forest, should be too.
Nathan Jones has only been a manager for a year-and-a-half - so some will say the Sunderland job could come far too soon for the Luton Town gaffer.
HITC Sport understands the Luton Town boss is in the frame for the Nottingham Forest vacancy.
Aston Villa are reportedly lining up a shock move for Luton Town manager Nathan Jones.
The Hatters face West Brom's Under-23s on Tuesday night.
Jones insists that Ruddock will not be leaving Luton.
The pair worked together previously at Charlton Athletic.