Obviously, the Martinez situation is murky and probably pointless to speculate about and the sportswriter, Sanchez, has been wrong at least twice already...but the issue seems to be agency and not what forms Martinez personally may not have signed and submitted to MLB (other than the appropriate agency agreement between him and the agent). The actual agent has authority to make an agreement on behalf of the client. That's what agency is. So, probably a matter of deciding who is the actual agent for purposes of a contract with a club. If MLB finds it too murky to decipher, they may just void both agreements. At that point, Martinez would probably sign with Cubs or whoever has most money on the table at the time.