Let's not pretend that it's Nagy's fault that Mitch is incapable of reading a defense.
Look, I'm not saying it's
likely Mitch would be good if we got rid of Nagy. I'm just saying it seems likely at this point that Nagy torpedoed Mitch's development.
They brought in Foles because he "knew the system" and could do what Nagy wanted. Yet it turns out Foles and Nagy are having communication issues and Foles is having issues with Nagy's play calls. If the guy they brought in specifically because he'd work well with Nagy, doesn't work well with Nagy, I think it's pretty plain to see Nagy is the problem.
Mitch may very well just suck, but it's obvious to me that Nagy can't scheme an offense that gets the most out of the players he has.