Kuhn, who is working out at Lambeau Field, is one of the few players still in Green Bay.
"It's kind of eerie," Kuhn said, according to the site. "There's nobody here."
"It's a bit of a downer, I'd like to have gone," he said. "Rather than going and taking a risk with it, I want to get my knee right. I will be 100 percent by June. That's when OTAs start. That's what I'm working toward."
The six-year veteran carried the ball 30 times for 78 yards and four touchdowns this season, a year after rushing for a career-high 281 yards. He also picked up 77 yards through the air, catching two touchdown passes.