I think number 21 looks better than number 20 and 28.
I see why they have him at kick return.IKM's tape out of high school was pretty impressive. Impressive power for his size, but his burst and vision appear to be outstanding. He needs to take a lot of Butler's reps even if Butler is healthy. IKM is a lot like Wadley in that you feel he could house it at any time.
They both look good & complement each other well. But this team needs 25 back badly.