The Bills' starting quarterback will be a game-time decision, coach Sean McDermott said Friday.
With Tyrod Taylor battling a knee injury, McDermott said the team was working through Taylor's availability.
McDermott said earlier this week that Taylor is the starter when healthy.
Taylor injured his knee last Sunday against the New England Patriots. He did not practice Wednesday and was limited Thursday, taking part in individual drills but not the team portion of practice.
McDermott said he was not going to put Taylor out there if his injury could get worse, but noted, "Every day he gets a little better."
If Taylor is not available, Nathan Peterman would be the starter. It would be the fifth-round rookie's second NFL start and first since his five-interception first half against the Los Angeles Chargers three weeks ago. Peterman played the remainder of the fourth quarter against the Patriots after Taylor was taken out of the game.
"One of the great things is he continues to be poised and composed," McDermott said of Peterman. "He has a great deal of balance in his life."
Regardless of the quarterback, the Bills need to get their offense going. They have gone seven quarters without a touchdown with the last visit to the end zone coming in the first quarter of a victory against Kansas City.
“They both have very strong arms," Colts safety Darius Butler said this week. "Obviously, Tyrod brings a different dimension with (his) athleticism. He can stretch out plays more. He can run around the pocket and he can make things happen with his feet. (Nathan) Peterman has a strong arm, too. He had a rough one out in L.A. against the Chargers, but we’ll see. Either way it goes, we’ll be prepared, we’ll be ready.”
Meanwhile, McDermott said he expected defensive tackle Kyle Williams, who has been bothered by a groin injury, and running back Travaris Cadet, who is out of concussion protocol, to play Sunday. The coach also said he felt "pretty good" about the chances of wide receiver Kelvin Benjamin playing.
However, tackle Cordy Glenn was limited in practice with his chronic ankle and foot issues.
"I thought he made some good progress this week so far, so we'll see," McDermott said.
The coach said guard John Miller will miss the game with an ankle injury.