Vick did not practice Wednesday, and has not yet been ruled out vs. the Washington Redskins. A source, however, told ESPN earlier this week that Foles would start Sunday's game.
"I'm ready," Foles said Wednesday. "I'm excited to just play again. Like I said before, my prayers are with Mike. I just want Mike to be healthy. But it's my time to go out there and just play and do everything I can for this team and help in any way possible."
Vick suffered a concussion in the second quarter of a 38-23 loss to the Dallas Cowboys four days ago.
Foles was 22 of 32 for 219 yards with a touchdown and an interception in relief of Vick. Those numbers weren't enough to help the Eagles avoid their fifth straight loss, a first in coach Andy Reid's 14 seasons. And Vick might not be the one trying to snap the streak.
"He's going to handle it like he's going," Reid said of Vick. "Whether he does (play) or not, we'll see how that works out."
Foles was quick to credit Vick as a mentor and an inspiration on the field.
"I've learned a lot from him and the guy's a tough dude," Foles said. "One of the toughest guys I've ever seen. He gets hit, he gets right back up. He gets hit, he gets right back up and he keeps firing."
Vick's headaches are subsiding, Reid says, but the veteran still needs to complete the mandated concussion testing this week.
"Michael's in a good place," Reid said. "He's hurting a little bit from the concussion, but he's in a good place. I haven't tried to overburden him right now."
Vick was diagnosed with a significant concussion and told to stay home and rest. Reid stressed several times on Monday just how badly Vick was hurt.
Asked if he expected Vick to play again this season, Reid said, "I think so. We've just got to see. I don't know that. He hasn't done any of the tests so far."
Philadelphia and Washington, both 3-6, are tied for last place in the NFC East.
With little to play for this season, the time could be right anyway for Foles to take over and see if he can start to prove he's the QB of the future. Vick has struggled most of this season and is no longer the dynamic playmaker he was in Atlanta and early in his Eagles tenure. Foles' performance down the stretch could be a factor in evaluating if Reid deserves to return for a 15th season, though that appears a long shot.
"I have a lot of confidence in him; that's why I brought him here," Reid said of the rookie QB.
Information from ESPN NFL Insider Adam Schefter and The Associated Press was used in this report.