Green Bay Packers outside linebacker Jeremy Thompson was hospitalized overnight Friday after suffering a neck sprain in a collision with running back Kregg Lumpkin during practice.
McCarthy wouldn't say whether Thompson was able to move his extremities immediately after the incident, but the Packers later issued a press release in which they said the linebacker wasn't paralyzed at any time. The team also said Thompson would be held overnight at a hospital for rest and further evaluation.
Lumpkin said he could see his teammate moving his feet after the two collided on a play.
"I got the ball, I saw an open lane and I cut back, and that's when I saw Jeremy in the hole," Lumpkin said. "I didn't lower my head or anything, but his head hit my shoulder pad. When that happened, he just said, 'Oh, no!' And he fell on the ground. After that, I was just standing there (asking), 'What really just happened?'
"I just was hoping he'd get back up, and he didn't."
Lumpkin, a member of the Packers' practice squad, was visibly shaken up by the incident, which comes three days before Monday night's home game against the Baltimore Ravens.
"Just the other week, we were talking -- about a lot of stuff, about how things happen," Lumpkin said. "I had no clue that it would happen like this or that anything would happen today.
"It's messing with my head. Me and him are close, we talk about a lot of stuff. It's tough to say, 'I'm all right.' That's somebody I talk to on a regular basis. If he's still in the hospital (after meetings), I'm going to go over there."
"Hopefully he can come back from that just with a little time off, let it just settle down and get right back out there," Matthews said. "Hopefully it's not as serious as we thought. But we're all praying for him to have a speedy recovery."
Thompson has played more snaps on defense in the wake of a season-ending knee injury to Aaron Kampman. With Matthews starting on the right side, rookie Brad Jones has taken the majority of snaps in Kampman's place on the left side, but Thompson and Brady Poppinga have been playing as well.
"He's definitely in the game plan this week, so I know I'm going to have to gear up to take a majority of those reps, especially with him and Brady spelling both Brad and I," Matthews said. "But I look forward to the challenge; I think the whole team does. Any time you have an injury like that where a player stays down, it really takes a toll."
The Associated Press contributed to this report.