Pittsburgh Tribune Review is reporting (without sources or bylines, incidentally) that Sean Lee is doubtful for Saturday night due to a knee sprain:
Penn State linebacker Sean Lee is doubtful for Saturday's game against Iowa after spraining his left knee this past weekend in the Nittany Lions' 31-6 victory against Temple.
Lee is expected to miss up to two weeks, but could return sooner if his rehab progresses as expected.
Lee left Saturday's game early in the fourth quarter and did not return.
No word on Navorro Bowman's return from a groin injury, though he's generally expected to return. Graham Zug sustained a concussion, and his status for Saturday is unknown.
Update: Lee's father isn't selling the leg cramp story:
"I think it's sprained," Lee's father, Craig, told The Post-Gazette. "He is getting evaluated by the doctor today. I haven't talked to him.
"I have no idea if he can play or not [Saturday]. I saw him yesterday and he was walking around. He didn't have any swelling, but he was sore."