"We don't know the extent of that yet. He's definitely getting an MRI," Morris said. "I know he's got an MCL, some other stuff, so we're checking that now. It may not be for the year. We're not sure of that yet."
"We lost one of our wolves," Morris said. "Next wolf up."
The Buccaneers issued a statement on Twitter around the time of the news conference saying that Grimm injured his medial collateral ligament.
Grimm missed the final month of the 2010 season after breaking his leg during a game against the Baltimore Ravens.
"When you're talking about Cody, you're talking about his practice habits, his effort and his willingness to do just about anything to put his face on people," Morris said. "He's a nasty, vicious, hard player."