Bush is on the active list and is listed as the starter, although he's likely to share time with Chris Ivory in the backfield.
Cowboys running back Felix Jones, who had also been listed as questionable with a hip injury, was active.
Inactives for the Saints today are running back Pierre Thomas, safety Matt Giordano, safety Darren Sharper, running back Ladell Betts, tackle Charles Brown, tight end Jeremy Shockey and defensive end Junior Gallette.
Sean Canfield is the third quarterback.
Pat Yasinskas covers the NFL South for ESPN.com. Information from The Associated Press contributed to this report.