Did you read what I posted above? Let me bold you the part that matters:
The agreement, unlike NBA internal rules, contains no anti-tampering prohibition. That is, it does not proscribe communication between a team and a foreign player about future employment while that player is performing for another employer under an existing contract. Presumably, that omission is deliberate and reflects that the strongest justification for tampering rules - the prevention of the existence or appearance of a conflict of interest within a league - does not apply in a situation of inter-league agreement. Indeed, it's doubtful that a persuasive rationale can be supplied for an international tampering rule, which inhibits negotiations during the tenure of a player's contract. And such rule, which shifts, in a way detrimental to players, the line implicitly drawn by existing contract (and tort) law between constraint and freedom to pursue employment opportunities would likely cons ute an an rust violation.