Gary Kubiak said it will be game-time decisions whether they will play.
Foster hurt his knee Thursday. Reed injured his hip Thursday and is a little sorer than Foster.
"I expect to play on Sunday," Foster said.
Kubiak said both players will be tested out before the game to see if they can play.
"If we pushed him (Foster) to practice, he would've went out there and practiced," Kubiak said. "But we're going to be smart with him, but then he'll have to show us he's ready to go. I think Brooks is a little bit more sore than Arian, as far as going out on the field, but he is also optimistic that he'll be ready to go. But we'll have to test them both."
Linebacker Bryan Braman (hamstring) didn't practice all week and probably will miss the game.
Information from The Associated Press was used in this report.