The actual discussions of cooperation between the parasites and the goblins didn't have a broad field. From the parasites' side, they offered access to a bunch of mines where Common and Rare Grade materials for various types of equipment could be found; maps of some challenge grounds that could help many warriors break through rank-crossing missions; and the risky expansion of some industries into Shamrock City that were unique to the parasites.
From the side of the goblin nobles, they offered security and funding for those industries, good renting schemes for the challenge grounds, and a fixed share of equipment made from the mined resources.
Ken and matriarch Niure were not really a part of these negotiations. The closest their own discussions got to those deals was when the matriarch asked for Ken's help in promoting the business chains of the parasite clan to the common people of Shamrock City using his influence among the beastmen.
