"I'm not playing this week," Vick said. "Not this week."
Vick pulled his hamstring in the first half of the Oct. 6 game against the New York Giants. He has been considered day-to-day by coach Chip Kelly and was active for Sunday's game against Tampa Bay. Before Thursday's practice, Kelly said he would not rule Vick out for the Dallas game.
Afterward, Vick ruled himself out. Nick Foles, who was named NFC Offensive Player of the Week for his performance against the Buccaneers, will make his second start of the season and eighth of his career.
"I just can't rush it," Vick said. "I came out and tried to push it a little bit, tried to run a little faster. I was able to do that, but at the same time, I don't want to push it too much. I want to let things happen naturally."
Kelly has been vague about what happens when Vick is able to play. After first saying Vick would remain the starter, Kelly said this week he would evaluate "everything" once Vick was healthy.
The first-year NFL coach was asked Thursday if he believed a player could lose his starting job because of injury.
"I think it all depends on the individual situation," Kelly said.
Foles can make the situation even more interesting with a strong performance against Dallas. A native of Austin, Texas, Foles faced the Cowboys twice last season, once in relief of the injured Vick and once as a starter. The Eagles lost both games, but Foles completed 44 of 66 passes for 470 yards, two touchdowns and one interception.
Foles said he had to "continue to be efficient. We had a little lull [against Tampa Bay] after we scored our first touchdown. You just want to keep the ball moving. Obviously, you strive for no bad plays and being smart with the football."
Vick dressed for the Tampa Bay game, Kelly said, because emergency quarterback James Casey was out with a groin injury. Casey is practicing this week, so it will be a game-day decision whether Vick is inactive.
"It's going to be fun to watch," Vick said. "I look forward to watching Nick. I've had some great, great battles against the Dallas Cowboys. They were all fun. Nick will get the opportunity to go out there and experience that."