The Bears signed inside linebacker Danny Trevathan on the first day of free agency a week ago Wednesday. Here are four things to know about the fifth-year pro:
1) Trevathan is excited about teaming with outside linebacker Pernell McPhee, the Bears' top free-agent acquisition last year.
McPhee brought toughness, leadership and attitude to the defense last year while recording 64 tackles, six sacks, one interception, one forced fumble and 10 tackles-for-loss in 14 games.
"He's a monster," Trevathan said. "Every time he's putting his hands on somebody, it's a train wreck.