Foster missed last week's game with a hamstring injury.
"He looks ready to play. He's had a good week," Houston head coach Gary Kubiak said. "I think he'll be fine. He had a really good day yesterday and today. We're pretty limited in what we do today, but he was fine. As long as there's no setbacks, he's ready to go."
He practiced this week for the first time since aggravating his left hamstring on August 27.
Derrick Ward started in Foster's place this past Sunday against Indianapolis, but Ben Tate did most of the work in Houston's 34-7 rout at Reliant Stadium. Tate ran for 116 yards and a touchdown, while Ward added 39 yards on 11 carries with a score.
Ward has been ruled out of this Sunday's game, while wide receiver Kevin Walter will be a game-time decision.
Foster led the league in rushing last season with 1,616 yards to go along with 18 touchdowns. He also totaled 2,220 yards from scrimmage.