Greg Cosell sees “a wide variation” in Johnny Manziel’s quality of play

Noted evaluator Greg Cosell of NFL Films has put on the tape of Texas A&M quarterback Johnny Manziel. And as Cosell told 104.5 FM “The Zone” in Nashville on Wednesday, he has seen good and bad things. “As you evaluate and transition him  . . .  there’s a wide variation in his play, so there’s…