BOURBONNAIS, Ill. -- Chicago Bears outside linebacker Pernell McPhee was placed on the physically unable to perform list after team doctors discovered an irregularity in McPhee's right knee during a physical exam on Wednesday.
"He truly is day to day," Bears coach John Fox said.
Fox gave a vague response when questioned about the timing of McPhee's latest setback. The veteran pass-rusher attended most of the Bears' offseason workouts that were open to the media. McPhee also never complained about the right knee on the couple of occasions he spoke with reporters since the end of last season.