Yes, one of the plans offered them everything north of the river, if eponllyn got Perdan and Partora. They responded with something like "OK, but we want Bescanon, too, so we can fortify our southern border. We know it would be adjacent to your capital, but that's your problem".
Thing is, Nivemus really wanted Perdan city to start a new colony. When it became apparent they weren't going to get it, all kinds of weird plans got tossed around.