Houston Texans rookie linebacker Benardrick McKinney has a mildly sprained MCL, according to a source of Aaron Wilson of The Houston Chronicle.
Head coach Bill O'Brien didn't have a specific timetable for the second-round pick's return.
"I think he’s doing okay," O'Brien said Wednesday. "I think he's really working hard to get back. I don't know if he'll be back for the Dallas game, but I know he wants to get back. He's chomping at the bit to be back and I think he's doing better."
McKinney, a rookie out of Mississippi State, is expected to fill a rotational role at inside linebacker on the Texans' talented defense. As of now, he's expected to be ready to play Week 1.