‘”He has the best arm of anybody in this draft,” Kiper said of the 6-foot-5, 237-pound Allen. “He’s got tremendous size, he’s got tremendous athleticism for a big man. You saw his mobility. You go back to that Iowa game early in the year. You look at the Senior Bowl in that second quarter his mobility there. He just has all the physical traits you want, athletic prowess. He has a will to learn. He has great competitive desire.”‘