This is the goal for every team but for Sams it will take at least year at best. He needs to put on size and even for as small as he is, he's not that explosive in his first step. He needs to develop greater explosiveness while adding size. But while he can do that, it may never be to NFL standards. BUT, he does have the heart and desire to prove himself so that may be enough to keep him on the practice squad and make a good living. He was good in college but the NFL is a whole different ballgame. These guys are ridiculously explosive and fast which why a 40 time means shit.
He has options....he just needs to go Tebow on his training routine which I think being on a practice squad would give him the opportunity to do. Learn the routes, rules of a game, and lift weights until his time comes. If it doesn't, I'd prob tell him to go to Canada and play like Doug Flutie did