Maybe they want to release him so they can sign him to PS.
DBs still need practice catching interceptions.
His OC insisted the reason why his offense was not playing well was QB and with Peterson it would be better.
Coach McD gave his OC what he wanted and then when it did not work out OC was let go.
It actually IMPROVED Coach McD's rep - he listens to coaches who work for him and is willing to cut them when they no longer can perform.