Mike Mayock doesn’t have Johnny Manziel going in the Top 15

NFL Network draft expert Mike Mayock only does one mock draft, which airs on the night before the first round. This afternoon NFL Media released the Top 15 from Mayock’s mock, and one noteworthy name is missing: Johnny Manziel. As Mayock sees it, Manziel won’t go off the board in the Top 15. You’ll have…