'He's all about business' - Dennis Allen's quiet intensity is starting to establish a mindset for the Bears' defenders heading into training camp

Similar to Johnson, Allen isn't going to sugarcoat things with any player regardless of their status on the team. He demands perfection on each and every play while stressing the importance of every little detail along the way.

"He's great. Very unique personality," rookie LB Ruben Hyppolite II explained last week. "But, I love it. He's all about business, it's all about ball. Which is how it should be."

That's the kind of coaching mentality this defense needed. The unit as a whole needed a reality check and to be held accountable in order to climb back up the ranks as a Top-10 defense, something Allen has a knack of producing at the NFL level.

The reason why Allen's defensive units are always effective and hard to diagnose is because they are complex and constantly showing different looks at all three levels.

Already in Chicago, he's toying around with different fronts on the defensive line, how he can mix around his two top linebackers in the middle, and how creative he can be with the talent in the secondary.

"Oh yeah, he's a very complex individual," star defensive end Montez Sweat added. "He has a lot of fronts and schemes and things that he can attack the offense with. So yeah, he's a great guy, smart."

Once pads fully come on during training camp and into the preseason, we'll get a look at how complex this unit can actually look on the field. Until then, the mindset has been rubbing off on the players and everyone seems to be buying in to what he's teaching early in the offseason.

"What is refreshing is working with a coach that has such a high standard for what he expects," veteran tackle Grady Jarrett said in May. "The detail, with the work to back it up —  the resume to back it up —  and to just be able to learn from a great defensive-mind... I can't wait to see where it takes us."