Source: Bears’ Willie Young has torn Achilles tendon

Defensive end Willie Young, a breakout star for the Bears’ defense this season, tore the Achilles tendon in his left foot Sunday against the Detroit Lions, according to a league source.

Young suffered his injury early in the third quarter. He needed help to the sideline from the Bears’ trainers and was immediately taken to the locker room by cart.

After the game, coach Marc Trestman didn’t detail the severity of Young’s injury, but indicated he’ll be sidelined for some time.

“It’s an injury that’s going to take some time,” Trestman said. “I don’t know many that aren’t [serious].”

In the locker room after the game, Young, who was wearing a walking boot, joked around with reporters and declined to talk about his injury.

“If it’s on the left side of my body, don’t ask me about it,” Young said. “That’s all.”

What happened on the play when he was injured?

“That’s almost like asking me about a question on the left side of my body,” he said with a smile. “You don’t listen. Come on, man, ya’ll know protocol.”

Was it a tough way to end a solid season for him?

“I just took a little break for a little while,” Young said. “What ya’ll talking about?”

How does the right side of his body feel?

“Oh, it feels like a million bucks,” Young said.

Signed to a three-year, $9 million deal in the offseason, Young has been a bright spot for the Bears this season. He leads the team with 10 sacks after having just six in his four seasons.