Cal. Business and Professions Code § 18628

“Manager” means any person who does any of the following: (a) By contract, agreement, or other arrangement with any person, undertakes or has undertaken to represent in any way the interest of any professional boxer, or martial arts fighter in procuring, or with respect to the arrangement or conduct of, any professional contest in which the boxer or fighter is to participate as a contestant; except that the term “manager” shall not be construed to mean any attorney licensed to practice in this state whose participation in these activities is restricted to representing the legal interests of a professional boxer or fighter as a client. Otherwise, an attorney shall be licensed as a manager in order to engage in any of the activities described in this section. (b) Directs or controls the professional boxing or martial arts activities of any professional boxer or martial arts fighter. (c) Receives or is entitled to receive more than 10 percent of the gross purse of any professional boxer or martial arts fighter for any services relating to such person’s participation in a professional contest. (d) Is an officer, director, shareholder, or member of any corporation or organization which receives, or is entitled to receive more than 10 percent of the gross purse of any professional boxer or martial arts fighter for any services relating to the person’s participation in a professional contest.