The Dallas Cowboys want Pittsburgh DT Aaron Donald and would love UCLA pass rusher Anthony Barr, but both likely will be gone at No. 16. Will they trade up for one of them? Will they trade down if both are off the board? The 16th choice is too high for Boise State DE Demarcus Lawrence, Northern Illinois strong safety Jimmie Ward or Missouri DE Kony Ealy, and Florida State DT Timmy Jernigan is a nose tackle, which is the reason they passed on Florida’s Sharrif Floyd last year. Notre Dame OG/OT Zack Martin might make sense if they sit tight.