The Packers this morning added starting right tackle Don Barclay to their injury report as "questionable" because of an illness.
Barclay was not on the injury report all week, so this apparently came up sometime from Friday afternoon to this morning. The Packers have no media access on Saturdays, so no other information was available.
If Barclay doesn't play, it's unclear how the Packers would fill his starting spot. Most likely they would move T.J. Lang from left guard to right tackle, move Evan Dietrich-Smith from center to left guard, and put Jeff Saturday back in the starting lineup at center. Just this week the Packers had replaced Saturday at center with Dietrich-Smith.
The Packers' only other backup offensive lineman is Greg Van Roten, who has played strictly guard and center in his rookie year, though he played tackle in college. The Packers also have two tackles on their practice squad, Andrew Datko and Shea Allard, but there was no indication as of late this morning that they were going to promote either to the 53-man roster.
Questionable means Barclay has a 50 percent chance of playing.