When it comes to signing a team, doesn´t matter what kind of esport title, it is of course necessary to negotiate in advance what kind of services the organization wants and what kind of compensation the team. Mutual verbal agreements are still a common form of legitimacy in esports but are neither save to the team, or the organization. There are many examples of organizations not paying for events, or hotels they have promised for, or players not taking part at official matches or fotoshootings. Therefore, every corporate-based esport organization should establish contracts to assure itself and the players of the arrangements being made.
In the end contracts are the only way, to professionalize esports and the business behind it.