BOURBONNAIS, Ill. -- Third-year linebacker Jon Bostic was a forgotten man in the spring.

The Chicago Bears' leading tackler (127) in the 2014 season, Bostic battled injuries throughout the entire offseason program, which robbed him of the opportunity to take live reps in the club's new 3-4 defense.

"To be honest, it wasn't even a back injury [that kept me out during the offseason]," Bostic said following Saturday's practice. "It was more stuff from shin, hip; it just kind of went up in the back. But we were all good once we figured it out. It just took a little while to figure everything out."

Bostic received medical clearance to practice when the Bears reported to Bourbonnais, but he's been limited during the first couple of days at camp.

"I wouldn't really say there are any limitations for me. It's just about being smart," Bostic said. "Training staff, they've been great with me, bringing me along with everything I've been going through. Like I said, I've got to be patient with them. They're being patient with me. As long as I've got trust in them, I feel I'll be good."

A middle linebacker in the Bears' old 4-3 scheme, Bostic put up impressive numbers over 2013-14. Bostic recorded 140 tackles, two sacks and 8 tackles-for-loss in 29 games (17 starts); but he's also committed costly mental mistakes that hurt the defense.

So how does Bostic envision fitting in Vic Fangio's version of the 3-4?

"For me, it's getting back to playing the game the way I was taught to play," Bostic said. "This defensive coordinator is exactly like I've had throughout my whole career. Going all the way back to college -- I went from Charlie Strong to Teryl Austin, who's in Detroit now. You see what he did with that defense. Dan Quinn, that was in Seattle the past two years, we're pretty much running the exact same scheme. We're going to be a lot more aggressive this year. So that's the thing I love."