Matthews played two seasons under Kelly at the University of Oregon before being selected in the fourth round of the 2011 draft. Kelly could make the jump into the NFL after this season. The Tampa Bay Buccaneers tried to pry Kelly out of Eugene during the offseason. Both Jon Gruden and Bill Belichick have picked Kelly's brain for tips about the Ducks' high-octane offense.
"I think the fans here would love him," Matthews told the Philadelphia Inquirer. "They would love his attitude, his go-get-it mentality.
"The way he carries himself, the way his mindset is, I think they'll really like him here. He would crack jokes. When he would talk to reporters at halftime, he would give the most sarcastic answers."
One question surrounding Kelly is, will his system will work in the NFL? Many college coaches have failed on the next level.
"You got to have the right personnel," Matthews said. "I think it could work. I don't see why it couldn't. It's pretty tough to stop. Even when you have it down, teams will start getting tired quick. They're not used to that pace.
"They're so unbelievably fast. Say, if it was a defensive period, he'd have two offenses lined up. When they'd do one play, they'd run off and the other team would come on. It was just rapid fire. His mindset was 100 plays in 100 minutes. You didn't ever have to condition."
Follow Kareem Copeland on Twitter @kareemcopeland.