There is one main issue that Frank Vatrano could run into by selling his number. The issue that can arise is whether he owns the rights to the number. In this case, there are three entities that could own the rights to the number and have legitimate arguments. Those entities would be the player, the team, or the league. The player has the case that he has ownership of the number because the number has become a part of his identity. Since individuals own their identity a case could be made that the player has the right to give a piece of his identity to others thus, an argument can be made that he can sell his number to another player. The team's claim would be that since they give the player the platform in order to gain notoriety, they have ownership of the number. There is also the fact that at the begging of the career there was no notoriety to the number therefore there was no value of the number to the player. The player could have had any number at that time he co...