John Sullivan is a smart player as he made all of the line calls at Notre Dame but he’s limited athletically.  He is not good at hitting moving targets in the running game but he’s a decent pass blocker.  With the Vikings’ style of offense however, Sullivan will have to improve his run blocking to get on the field.  He played in 47 games (43 starts) at Notre Dame.  Sullivan is 6’3″, 294 pounds and he could also be tried out at guard for the Vikings.  If the Vikings can coach up Sullivan they could have something here.