AsMicah Parsons gets his start with the Green Bay Packers, his first appearance with the team might be up in the air. Parsons has been dealing with a L4/L5 facet joint sprain in the vertebrae in his back, per multiple media reports, and he may need an epidural injection before the Packers' season opener Sunday. Parsons has been prescribed an anti-inflammatory to reduce the tightness in his back and he's on a physical therapy program, perESPN's Adam Schefter. The injury puts his availability for Week 1 into question as Green Bay hosts the Detroit Lions on Sunday. [Join or create a Yahoo Fantasy Football league for the 2025 NFL season] Prior to beingtraded to the Packersin a blockbuster deal, the edge rusher had reported to the Dallas Cowboys' training camp but was sidelined due to a back injury. Despite speculation that him sitting out of practice may have had more to do with thecontract standoff with Cowboys owner Jerry Jones, Parsons' injury appears to be real, and may affect his availability for Sunday's game. Parsons joined Green Bay at practice Monday, making his first appearance in his new No. 1 jersey. (Parsons is the first Packers player to wear No. 1 since team founder Curly Lambeau.) The Micah Parsons content all you#Packersfans have been waiting for.pic.twitter.com/J2W7mkDuie — Kyle Malzhan (@KyleMalzhan)September 1, 2025 During hisintroductory news conference Friday, Parsons told reporters he was feeling physically "great" ahead of the season. "I think I can contribute a lot. I'm going to team up with the doctors and create a plan. We already talked about how we can ramp me up and get me in a flow where they feel comfortable and I feel comfortable," Parsons said. "My plan is to be here. They didn't give up what they gave up for me to sit on the sidelines." The Cowboys received defensive tackle Kenny Clark and two first-round draft picks in the trade for the 26-year-old defender. And it won't take long for Parsons to face his former team: The Packers will travel to Dallas in Week 4 to face the Cowboys.