The positives in a 28-18 Michigan win over Arkansas State (and yes, there were some. The running game, the first team defense, and the final score for anyone with betting squares who felt their 8 – 8 draw sucked) were overshadowed by one big one Saturday … RELATED: Sherrone Moore updates Michigan quarterback competition after Davis Warren struggles And it was the one many of us feared going back to spring, when we suggested Michigan might need to go to the portal for its starting quarterback. Without question, this has become a huge concern now through three games, right up there with an offen…