Bad Bunny’s agency did bad—or so baseball’s powerful players union says, according to a new report.

William Arroyo, the main baseball agent for Rimas Sports, the agency led by the Puerto Rican star, had his MLB Players Association certification revoked after a union investigation over improper benefits provided to players, according to ESPN.

The MLBPA informed Arroyo’s clients, which include Mets catcher Francisco Alvarez, Nationals outfielder Eddie Rosario, and Reds infielder Santiago Espinal, among others, on Friday.