Even the NBA commissioner doesn't give a damn. I think it's a stupid rule anyway. Players recruit players. GM's have hypothetical conversations with agents. I remember hearing the Jazz had evidence of Boston tampering with Hayward but that went nowhere. Unless it's a public statement, league office won't do anything. And even then, it's just a fine that's pocket change to franchise owners, umm, I mean governors.
How are they going to stop it? Plant a team representative in his house and his agent's office?