Do NFL Rookies have the right to hold out on their contracts?

In my opinion, I think it's a joke. These rookies have not proven anything. I don't see how they have the right to hold out on a contract. If I were an owner I would just sit the rookie. These prima donnas, as good as they are, need to just shut the hell up and play the game. Show us that you're worth your money and then we'll pay you.