This is what DC.com had to say on Coples in their Mailbox:
Dijon Kinney - Columbus, OH: Could you see the Cowboys moving up for Quinton Coples, or hoping he falls to them? Would he be an outside linebacker here, or a defensive end? And how good would he be at either position?
Nick: I just don't see the Cowboys moving up too far to get anyone. Now if they're in love with a certain player and they're shocked he's still around after 10 or 11 picks, then possibly I could see that scenario. As for Coples, he's a defensive end in any scheme. Rather he's off the edge in a 4-3 or a 3-4 defensive end, I think that will be his position. The book on him is that he's not a high-motor guy but when he decides to turn it on, he can be dominating. I see a lot of Chris Canty in this guy. Not sure how much of a positive that is.
Josh: I just don't think they have such a huge need right now at any position that it would be worth trading future picks to move up. If he fell to them, I think they could be interested in him as a 3-4 end who might be able to supply a pretty decent pass rush when sliding inside to defensive tackle in nickel situations. But even if he were available at No. 14, I wouldn't be shocked if the Cowboys went another direction.
http://www.dallascowboys.com/news/news.cfm?id=56317E4A-C3BA-0CF3-DE250F5F23AAF2B9