I agree with the rest...this is a real tough call. I'd try to see if he'd go for a step below Beckett, possibly Shields... And even if he says no, I still think I'd do this and here's why:
Yes, you'd be losing a lot of value in Zimm & Beckett, but look who you already have at those positions; Longo @ 3rd and basically 2 more Aces & Shields at SP.
Add to that the fact that you get a YOUNG Fielder & possibly the best prospect in baseball...yes this is a tough one, but you'll be fine @ 3rd and your SP staff can handle the loss of Beckett
thanks for helping with mine.
I added a question if you get a chance:
viewtopic.php?f=26&t=405715