Pros: Allen is an athletic defender who performed brilliantly at times at both cornerback and safety. He has big-play ability as a defensive back to rank with any player in this draft class. He combines fine size with excellent speed, quickness, agility and ball instincts to become a top-flight pro. He is a tall, long-armed, long-legged, versatile player with experience to project to either position as a pro. He has quick feet and rare size for the corner with explosive speed to stay with fast wide outs. He has fine range to man the free safety position with cover skills to match up with slot receivers. He is aggressive when going for the ball and has the hands to make plays. In run support, he is a willing hitter who will wrap up and make the stop.
Cons: His final season ended at midseason with a hip injury that left his status uncertain. In pass coverage, he needs development in his technique and additional play-recognition skills. As a tackler, he is not a big thumper and bigger backs may give him trouble. He will probably be one of the biggest wild cards in this draft due to medical concerns. His level of development is a concern with limited experience at both corner and free safety.