It also prominently lists its membership in Virtuoso, an exclusive travel agency consortium. But until now, there‚Äôs been no instantly recognized certification that. ASTA will need to hold agents accountable to a high standard, which would. Mon., Mar. 12, 2018 12:00 AM MDT Clubs may negotiate with unrestricted free agents March 12-14: Clubs are permitted to contact, and enter into contract negotiations with, the certified agents of players who will…