The James Posey Watch has stretched into Week 2 with no resolution in sight quite yet. The Globe's Frank Dell'Apa reports Wednesday that "James Posey, the Celtics' highest-priority unsigned veteran, is seeking a four-year contract, an NBA source said yesterday." So, as Celtics fans continue to hold their collective breath hoping the world champs bring back their vital 6th man, here are six reasons why Boston should bring back Posey.