Rookie defensive end Devin Taylor wasn't on the Detroit Lions' active roster to open the season.

Now he's expected to start against the Chicago Bears in a battle for first place at Soldier Field. And he's expected to act like a veteran.

That was C.J. Mosley's message to Taylor this week.

"I had a conversation with Devin," the ninth-year veteran defensive tackle said. "I told him not to have the mind-set like you're a rookie. We don't need you to be a rookie right now. We need you to be a veteran player.

"He's definitely someone I've got my eye on. He's ready for the fire. I don't think he's going to get burned."

Detroit selected Taylor out of South Carolina in the fourth round of April's draft, but he was considered more of a project than fellow rookie defensive end Ezekiel Ansah. He began the season inactive, and didn't play more than 17 snaps in any of the first seven weeks.

But Ansah is listed as doubtful for Sunday's game against the Bears, and isn't expected to play. Taylor is expected to earn his first career start in Ansah's right spot.

"I'm telling you, I got a good feeling, man," Mosley said. "If I had to pick someone to have a breakout game, it'd be him."

Detroit needs Taylor to not just eat up snaps, but perform. Its cornerback ranks have struggled, and Bill Bentley is not expected to play with a knee injury.