During Green Bay's win over the New Orleans Saints last weekend, Jennings aggravated the injury he initially suffered in Week 1 and left the game early. Jennings missed Week 2, and the two-time Pro Bowl selection has only 12 catches for 78 yards and one touchdown in three games.
It's uncommon for a team to rule out a player on Thursday, but coach Mike McCarthy felt it was best to shut down Jennings for the week now.
"I had a conversation with Greg before practice, and we just talked through the history of his injury and we felt like we were going around in a circle," McCarthy said. "We just felt, why take this decision all the way to Sunday?"
Jennings, who will be a free agent after this season, talked Wednesday about his frustration with a season that has included the groin injury and a lengthy absence with a concussion in the preseason.
"I'm trying to not let it completely overtake me and let it become overwhelming," he said. "Again, seven years playing this game at this level, I've never experienced what I've experienced this year. It's new territory for me, but I'm getting through it. I knew it was going to be an up-and-down type of situation, one that I was going to have to push through. Obviously, the game on Sunday, it grabbed me and gradually got worse and worse, so I shut it down."
Jennings' injury issues have played at least some role in the Packers' offense struggling this season. Through four games, Green Bay is ranked 20th in the NFL in total yards and 19th in points. Last season, the Packers led the league in scoring and finished third in total yards.
"When Greg Jennings is on the field, we definitely have a chance to be a very good offense," McCarthy said. "I still think we can play a different way and play without Greg and still be very good. I'd always want my best players out there. That's why it's important to get him healthy and get him back to 100 percent."
Jennings added that he might not return to the field this time until he's fully healthy.
"However long it takes, so I won't have to sit and answer these same questions again," he said. "We don't know what the timetable is. All I know is we're going to take it one day at a time."
And he's taking the same approach with a big payday possibly on the line if the injuries continue.
"Honestly, I'm not even focused on that," Jennings said. "I just need to get back on the field and be 100 percent. Contract, that's going to take care of itself. It's going to be what it's going to be. I can't predict the future. I couldn't predict this. It is what it is. If I can get back out there and be 100 percent, my performance will speak for itself. I'm not concerned about that, not at all.