If you believe his solicitation of OOC coordination impedes gameplay or violates the social contract and he hasn't responded to reasonably in-game measures, I'd say you could open a Magistrate case. However, I would urge you to send him a short-but-substantive OOC message privately first explaining your concerns in a polite and concise way, especially if it's a new player.
Read the other thread. Apparently multiple people have spoken to the player, to no avail.
