PHILADELPHIA — Four days after banging his head on the turf in Washington, Eagles quarterback Jalen Hurts was nowhere to be found Thursday at NovaCare Complex. He didn’t participate in practice, signaling that he has not advanced in concussion protocol. Hurts’ concussion was serious. He has made no significant progress since being pulled by the NFL from the game in D.C. Backup Kenny Pickett, who suffered a rib injury against the Commanders, was a full go with the first team this week in preparation to start Sunday against Dallas. “It’s a big opportunity,” Pickett said. “I’ve been working hard to stay ready. I felt like I was in a good position last game with my preparation. Now, having a week to practice, I’ll feel even better going into the stadium. … I just want to get the win. “It’s great to get reps with guys I really haven’t had a chance to play with,” said Pickett, who was 14 of 24 for 143 yards with a touchdown and an interception in D.C. “Getting the continuity, getting in and out of the huddle, and obviously throwing to the receivers — it’s big for me.” The Eagles signed 26-year-old QB Ian Book to their practice squad. The Notre Dame alum, who was here in 2022, has been with three other organizations. Most recently he was on the Kansas City Chiefs’ practice squad. Tanner McKee, drafted out of Stanford in the sixth round in 2023, remains the team’s third-string arm. “Ian obviously (had a) highly productive college career,” Eagles coach Nick Sirianni said. “We had an opportunity to get him (two years ago) after he had played a little bit in New Orleans. Really enjoyed our time with him when he was here and had some high hopes for him. “Obviously, we didn’t keep him around, but that was for different circumstances as far as other guys stepping up and playing good. Yeah, really liked him. I just liked the person, liked the player. (He) has played and started a game in the NFL and had played good football for us in the preseason. (He’s) familiar with a lot of things that are here and (we’re) excited to have him.” Thursday was the Birds’ first practice this week. They had a walk-through on Tuesday and were off Wednesday for Christmas. Sirianni offered little insight into Hurts’ status. “I’m still waiting to find out,” he said. “Again, as you guys know, when you’re in concussion protocol, I have no say in that, and Jalen has no say in that. That’s completely up to the doctors, as it should be.” Hurts’ concussion happened in the first quarter of the loss in Washington, when the Eagles were up 14-0 and on a roll. They went on to lose 36-33 in a sloppy performance. Wide receiver A.J. Brown (knee/rest), linebacker Nakobe Dean (abdomen) and edge rusher Josh Sweat (ankle/rest) saw limited action in Thursday’s practice. Meanwhile, the Cowboys have ruled out star receiver CeeDee Lamb (shoulder) for the rest of the season. • • • Sirianni reportedly apologized to former Eagles tight end Zach Ertz after the two had a post-game dustup in Washington. Neither man would comment afterward on the incident. Sirianni didn’t expound on Thursday’s report. “I’ll just keep my conversations with any guys private,” he said. “I’ve got a lot of respect for Zach — great football player, great person to be around. I’ve really got a lot of respect for Zach, and all the good things that he’s done, and my relationship with him.” • • • Former Eagles receiver DeSean Jackson has agreed to become head coach at Delaware State. Apparently, D-Jax has always wanted to coach at an HBCU. Jackson has no formal coaching experience. Michael Vick recently became Norfolk State’s head coach.