After Monday's win, Kubiak also said Osweiler is set to start on Sunday.
"Yeah, I've said that. Nothing has changed with Brock," Kubiak said. "If something would change, players would know first."
Manning is making significant physical progress. Though the 39-year-old quarterback will never be fully healthy this season, he has gone through four straight throwing sessions without a setback. Manning, who has been sidelined since mid-November with a foot injury, could return to practice as soon as this week.