If you give Fields Ben Johnson, he still wouldnt get to where Caleb has the bears now.
As a premise, I do not disagree that Caleb has a higher ceiling and floor. However, I think this negative outlook in pairing Fields with someone like BJ is too slanted against Fields. Personally, I think he NEEDS (or needed) someone like Ben, because the Eberflus staff was very unfriendly to productive coaching and instilled bad habits in an effort to "not turn the ball over".
I think his NFL time is up, but I affirm he was done in by the shytty coaching here in Chicago. I still think he can be serviceable backup, but he clearly needs a coach that will get through fundamentally. Caleb was looking like the same brand of bust cause of how bad the old staff was in overall coaching, namely the player development.
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