He may see the logjam of young guys now on this team including Duran, Cedanne, Abreu, Verdugo, Casas plus Yoshida under contract for 4 more, and figure his own opportunities to cash in now are much better for a 2 year deal. I doubt Bloom offers him a bigger 2 year deal. Yankees might , if Cashman survives.
Bloom is burdened with some guys who are best at DH, including Duvall who will be FA this winter. You could argue that Devers, Turner, Casas, Yoshida should be DH's in some league.