Based on the cast Moss is wearing in the Pizza Delivery, walk-on getting a scholarship video, I'm guessing he has broken the 4th and 5th metacarpals of his right hand.
In football, this tends to happen when blocking and it is commonly referred to as the "Boxer's Fracture." You thrust out your hands to engage an oncoming opponent and the bones can't take the force of the impact. Recovery time is 6-8 weeks in the cast. See here:
If I'm correct about his injury, I don't see how he plays in the first four games of the season, let alone Week 1.