He's very big and strong at 6-5 and 333 lbs. He's more adept at pass protection than as a run blocker but that's not to say he lacks skill at it, by any means. Jerry Jones is familiar with him and wants to use him as a left guard, by way of his own statements. He has had experience at both tackle spots, though, and I'm sure flexibility is a part of that attraction. His lateral quickness needs work, though, which makes a switch to guard being a temptation to move him there. The Cowboys have long been attracted to players with positional flexibility and he fills that bill.