NFL Media analyst Lance Zierlein is constantly talking to NFL and college sources about players in the college game. In this space each week, Zierlein will share some of what NFL folks are discu sing in their circles.Sources Tell Us: | | | | | | The scoop: "I have no doubt that (Su'a) Cravens can play down in the box in the pros. He will either be a 4-3 WILL (outside linebacker) or a 3-4 inside...