By Matt Audilet Some NFL teams reportedly have some “off-field” concerns about one of the top quarterback options in this year’s draft class. NFL teams aren’t sure about former Ole Miss standout quarterback Matt Corral. An anonymous NFL offensive coordinator shared some of these concerns with NFL insider Albert Breer. “He’s kind of a mess. … His offense was a true college offense, he pushes the ball, he plays reckless with his body, he won’t hold up playing the way he did in college. And there are character concerns. I’m not sure you want him leading your program, his sorts of issues aren’t th…