Just found this.. its pretty good. Looks like there could be a lot of work to do but should be interetingIf Eberflus insists on going with the 4-3, might be time to trade Mack for some draft picks? I know nothing about his contract or the Bears’ cap situation.

What New Bears Defense Could Look Like
Matt Eberflus is a 4-3 style defensive proponent who used a scheme that looks a lot like the old Lovie Smith cover-2, so who would be the Bears version of Lance Briggs and who's Brian Urlacher?