Here's Matthew Pouilot of Rotoworld:
Matt Cain, Tim Lincecum, Noah Lowry (Giants) - I doubt that either Cain or Lincecum is going anywhere unless the Giants swing a Miguel Cabrera deal. Crawford wouldn't be a terrible return for Cain, but I wouldn't make that trade if I ran the Giants. If the Yankees offered Phil Hughes and another quality piece for Cain, that'd probably be worth doing. It's not happening, though. Lowry is the one the Giants would be willing to move for a non-elite talent. The 27-year-old left-hander is signed for $6.75 million over the next two years, and there's a $6.25 million club option for 2010. That makes him fairly attractive no matter how much his WHIP fell off last season.
Lowry and RHP Brad Hennessey to Mariners for C Jeff Clement and OF Wladimir Balentien
Lowry to Cardinals for OF Chris Duncan and RHP Mitchell Boggs
Lowry to Royals for OF Chris Lubanski and SS Jeff Bianchi
Prediction - Lowry traded to Mariners, Others stay
Caveat: this is a fantasy site. But I like the thinking, and these guys take this stuff seriously. And they are no weirder than the sabermetricians.
I'd do trade #1 in a heartbeat.