BJ Upton is off of SS for basically good.
IF he plays in the infield, it will be at 3rd base, but more than likely I think he is at center field next year.
I see a lineup consisting of something like this.
CF--BJ Upton/Rocco Baldelli
RF--Delmon Young
LF--Carl Crawford
2B--Jorge Cantu
1B--Greg Norton/Ty Wigginton
DH--Elijah Dukes/Jonny Gomes
3B--Iwamura

(If he don't sign then I think the Drays just might hold onto Rocco, and Upton will be in this spot.)
C--Dioner Navarro
SS--Ben Zobrist
This is not a very good lineup once you get past Crawford in the #3 spot.