Jordy Nelson has been placed on the physically unable to perform list due to a new left knee injury.
Nelson tore the ACL in his right knee that forced him to miss the entire 2015 season.
Nelson called it a "hiccup" with the left knee and insisted it was minor, but he couldn't put a timetable on his return.
"Our end goal is still the same," Nelson said Tuesday. "We'll be ready for the regular season. Like I said, there's just a little hiccup with the other leg.
"We're not worried about it. We're going to work through it inside and continue to progress, and we'll be ready to go at some point during camp and definitely for the season."