Trevor Penning

That is not what was on his college tape or the reports coming during his first camp. He was aggressive, not dirty. He ruffled a lot of feathers in camp for driving the players he was blocking back through the whistle and tossing them around like he did in college. Being that aggressive was what made him a first round pick and the coaching staff throttled that aggression completely and it turned him into just a guy.
That's dirty, they aren't going hard on you so you take advantage of it in practice, but on game day when the OPPOSING TEAM is lining up in front of you and pushing you back like sack of laundry you realize your not as "aggressive" as your TEAMMATES who were going light on you made you feel.

…Northern Iowa is not a perennial powerhouse, he was a big guy bigger than everybody else in he Missouri Valley conference, not exactly Big Ten or SEC football competition.

I'm sure he will get better, and maybe his best position is inside at guard, but he has proven to be terrible at LT.