Melbourne's Christian Welch says the alleged recording of a players' meeting by a NRL official is a breach of trust that needs to be investigated by the governing body's integrity unit.
The NRL legal team is reportedly interviewing its own staff members after a senior employee was accused of secretly recording discussions between players and NRL boss Andrew Abdo at the Leaders in League conference last Friday.
The Rugby League Players' Association (RLPA) is already threatening strike action over the bitter pay dispute, with the latest development further souring relations between the two parties.
