Free agency a defining moment for Trubisky?

Mitch Trubisky (10) is the Bears’ all-time leader in career passer rating (87.2), fifth in passing yards (10,609) and fifth in touchdown passes (64).Drafting Mitch Trubisky was a major misjudgment by Bears general manager Ryan Pace, but maybe Matt Nagy exacerbated that mistake by failing to maximize Trubisky’s NFL-caliber quarterback skills and develop the 2017 No. 2 overall pick into a better quarterback than he was. Even if Trubisky wasn’t Patrick Mahomes, maybe he could have been an Alex Smith.

It’s a legitimate debate, with Nagy’s ability as an Andy Reid disciple to build a proficient NFL offense in question after three seasons. In fact, the book on Nagy at this point is a carbon copy of…