Palmer, who has yet to practice in any capacity since sustaining an ankle injury during Buffalo's loss to the Falcons in Week 6, is also managing a knee issue. For any chance of being cleared to play Sunday on the road against Carolina, he'll almost certainly need to get back on the practice field as at least a limited participant Friday. Curtis Samuel (ribs), who has been limited in practice, will stand to handle an expanded role on offense if Palmer misses time.
