The question of whether the parties engaged in good faith negotiations, or whether any proposed change in the NFL Constitution and Bylaws would violate or render meaningless any provision of this Agreement, may be the subject of a Non-Injury Grievance under Article 43, which shall be the exclusive method for resolving disputes arising out of this Section 4. If the arbitrator finds that either party did not engage in good faith negotiations, or that the proposed change would violate or render meaningless any provision of this Agreement, he may enter an appropriate order, including to cease and desist from implementing or continuing the practice or proposal in question; provided, however, that the arbitrator may not compel either party to this Agreement to agree to anything or require the making of a concession by either party in negotiations.