Sunderland striker James Vaughan scored during his side's 2-0 victory over Burton Albion.
Wolverhampton Wanderers currently lead the Championship, after a brilliant start to the campaign.
Coleman finds Sunderland find themselves rock bottom of the Championship.
All three candidates have either managed or played for Sunderland before.
The Derby County coach is among the favourites for the Sunderland position.
The former Sunderland left-back is also a lifelong Mackems supporter.
Michael Gray loves Leeds United fans.
Michael Gray had two spells with Leeds United, but says the second one, under Dennis Wise, wasn't great.
Sunderland have signed seven players this summer, but Michael Gray believes Simon Grayson will add to that figure.
Chris Wood is linked with a move away from Leeds United this summer.