Lee practiced all week with a cast that covered his hand but he was listed as questionable to play against the Bills. He did not play last week against Seattle and was replaced by Keith Brooking in the starting lineup.
Punter Mat McBriar is also active after missing the Seattle game with a nerve condition that affects his left (non-kicking) foot. McBriar, however, will not hold. Quarterback Tony Romo will serve as kicker Dan Bailey's holder for the second straight game.
For the Bills, kicker Rian Lindell missed his first game in nine seasons with Buffalo after being placed on the inactive list.
Dave Rayner took over for Lindell, who broke a bone in his right shoulder trying to make a tackle in the Bills loss to the Jets last week.
Information from ESPNDallas.com's Todd Archer and The Associated Press was used in this report.