Its best for the team and kid if they put him at a position and keep him there. I hate it when team moves a guy around and he never gets to "perfect" a position and thats limts his value to the team and his pro chances. It won't take long to try him at receiver and Safety then determine where he's best suited and let him compete there.
I think his best position is WR but IMO he'll come in as a safety. To me he's a slightly better version of Rayshawn Jenkins, which I'll take all day long. Kid is going to be BIG by the time he actually starts lifting and eating right.