According to ESPN.com, the deal includes a player opt-out after the first year, which should guarantee at least a patina of effort from Davis, who's still only 28 (which surprised me at first blush).  Davis is a mercurial talent who makes Maggette's defensive instincts seem like those of Shane Battier, but he's a capable catch-and-shoot scorer off the bench.  He can also start on the wing in a pinch and give you 35+ minutes.  Given what was out there, it's not a bad signing -- though Davis is the kind of guy you never want to watch down the stretch if your season turns to dreck.