By Simon Evans
"I would be shocked if Donald Driver does not play Sunday. He would practice today if I would let him," McCarthy told a news conference on Friday.
"He tweaked it in Wednesday's practice, and frankly I just do not want to take any chances at this point.
"Donald's played a lot of football, he knows the offense, he's had a whole week of preparation with the plan last week, so this is clearly just being safe with him."
The 36-year-old Driver has suffered quadriceps injuries on at least two occasions during the season.
Green Bay's other injury worry, linebacker Erik Walden, faces a decisive day after missing Thursday's session as he struggles to come back from an ankle injury.
(Editing by Frank Pingue)