Wis. Stat. § 440.991: Athlete agents: registration required; void contracts.

(1) Except as otherwise provided in sub. (2), an individual may not act as an athlete agent in this state without holding a certificate of registration under s. 440.992 or 440.993.

(2) Before being issued a certificate of registration, an individual may act as an athlete agent in this state for all purposes except signing an agency contract, if all of the following are satisfied:

(a) A student athlete or another person acting on behalf of the student athlete initiates communication with the individual.

(b) Not later than 7 days after an initial act that requires the individual to register as an athlete agent, the individual submits an application for registration as an athlete agent in this state.

(3) An agency contract resulting from conduct in violation of this section is void and the athlete agent shall return any consideration received under the contract.