Denver Broncos coach Gary Kubiak expects quarterback Peyton Manning to miss at least two more weeks with a plantar fascia tear in his left foot.
Manning, 39, was in Charlotte on Monday for a second opinion on his foot, which he hurt on November 15.
It was recommended the 18-year NFL veteran spend at least the next week in a walking cast.
"Peyton and I had a good visit today, and we've got a plan in place for his recovery," Kubiak said on Tuesday.
"His foot will be in a cast for at least a week, but he'll be able to be part of meetings and do some workouts with the rest of the team.
"We expect him to be unavailable for at least a couple of games. We'll proceed from there and will continue to support him as he does everything he can to get healthy."
Manning went five of 20 for just 35 yards and four interceptions when he was removed from a 29-13 loss to the Kansas City Chiefs.
Brock Osweiler started Sunday's win over the Chicago Bears and will start against the undefeated New England Patriots and at the San Diego Chargers.
The Broncos play host to the Oakland Raiders on December 13, when Manning could return.
To provide depth behind Osweiler, the Broncos announced they will work out former Minnesota Vikings starter Christian Ponder on Wednesday.