He can roll out to the right but the moment the rush is coming he doesn't stand tall and take a beating, he makes either a very high risk decision(which will kill him in the pros) or he just takes the sack. Rosen and Darnold stand tall in the pocket, take the hit, but make the throw. That's concerning. Sure, Allen can extend plays with his feet, which is impressive, but in the pros where the LBs are not only as fast as he is, but also a lot bigger, that's not going to work as often. Allen is a great athlete, but he's not Cam Newton or Wilson.
Allen is good at navigating a pocket, but if the rush is coming he struggles big time. The best QBs in the NFL are going to be the ones that solely beat you with their arms. I'm not sure Allen is going to be that guy immediately. He needs SIGNIFICANT development time.