The Green Bay Packers have three players who still need to pass their physicals, and three players who are being eased back from injuries.
TE Andrew Quarless has a hip flexor, LB Diyral Briggs has an injured hamstring, and undrafted rookie DL Eli Joseph did not pass it for some unknown reason. While Quarless and Briggs are more likely to win a roster spot than Joseph, the practice time is important for all three as the Packers are still sorting out the backup roles at those positions.
Three other players are being held out as a precaution according to Mike Vandermause at the Press-Gazette:
In addition, tight end Jermichael Finley, safety Morgan Burnett and defensive end Mike Neal will be held out of the competitive team period of tonight’s practice, which begins at 7 p.m. at Nitschke Field.
At this point, it's not a big deal that those three players are out. LB Nick Barnett was held out for most of the preseason, and early into the regular season, back in 2009 as he came back from a torn ACL. They took that precaution even though I'd never read a report that his repaired knee was bothering him. I expect all three players will be on the active roster to start the regular season.
I don't think anyone doubts that Finley will be named the starter. I can understand the need for caution, but the time away doesn't help either Burnett or Neal as they look to win starting jobs.
While the Packers were able to bring 90 players to camp, usually they are only allowed 80, the absence of those six players, plus the bizarre NFL rule that doesn't allow recently signed players like K Mason Crosby or FB John Kuhn to practice until later this week, it's more like they only have their usual 80 players in camp.