Nate Allen has yet to undergo testing for the concussion he suffered in the Eagles' 30-24 loss to Chicago on Monday night, leaving his status up in the air for next week.

If Allen can't play against the Cardinals on Sunday, rookie Jaiquawn Jarret will likely get his first career start at safety. Jarrett jumped in for Allen after he went down in the first quarter.

Allen said he was "alright" after leaving the NovaCare Complex Tuesday afternoon. He said he had not yet undergone concussion testing in order to be cleared for practice. He added that he did not believe he ever had a concussion before.

Eagles coach Andy Reid sounded pleased with Jarrett's spot duty against the Bears. Up until that point the Eagles second-round pick had only played on special teams.

"You know what, he did pretty good," Reid said. "He's got some things he's got to work on there, but I thought for the most part stepping in with a limited amount of reps, I thought he did a pretty good job."

- In other injury news, Reid said that guard Evan Mathis suffered a "turf toe" in the game and had an MRI on Tuesday. Reid said that he thought Mathis would struggle to practice on Wednesday. Mathis left the Bears game late and was replaced by lineman King Dunlap.

- Reid said that defensive end Juqua Parker, who missed the game with a high ankle sprain, was improving.

- Reid was asked if he needed to replace Dominique Rodgers-Cromartie as the nickel cornerback with Joselio Hanson. "With Dominique, he's going to continue to get better, and he's working hard at it," Reid said. "It's a little different when you move from the outside to the inside, and he'll keep working on it."