Nobody can ever put it into words. Especially if they've seen his last 4-5 games of the season.
I haven't seen many clearly expressed concerns, either. -The size thing is there - I get that. I don't mind his size or view it as a negative, but it's there.
-The running style comments don't add up to me. He's not a bruiser at all. He can be, but he always looks to make people miss, and do so at a great rate.
-The O-line argument is a cop out; are we just going to ignore everyone with a weekly talent advantage on their roster, especially at O-line? We would have missed out on The U backs (Gore, Willis, Portis), Peterson, Trent, Martin, and so on. That is what happens when you go to the best football teams in the country. On the other side, you play the LSU, Florida, Georgia, SCAR level defenses too.
-To add to that, there is plenty of evidence that Lacy is not a system/O-line product.
-Speed? I don't see it. He looks faster than Ingram and will run about what Doug Martin did, despite being bigger. Very fast for his size.
-Ingram/Yeldon/Richardson. Cop out.
Those are the concerns I have heard, and they really don't add up to me. My concerns, because he's not perfect: his footwork - while strong, especially for his size - can be sloppy at times. His initial burst is great for his size, but will it translate to the NFL? Can he be a 3rd down back? His hands look good, but they weren't tested much - did have a couple drops. His blocking was just okay, considering his size/strength. He can get a bit upright at times.
He's a legit 1st round prospect, in my opinion. And I thought and said so before I saw a single mock with him going in the first.