My guess is that he can't move up, so he'd rather get out... I don't blame him.
I'm not certain I agree with this (see the "blow it up" thread) but IF the idea is to keep the current team together, it makes more sense to surround our key guys with veteran free agents (and there will be aplenty looking for a home) than to bring in some rookie that will sit...
Danny's going to squeeze one more year out of this window, hoping for a lockout to follow...