I think he definitely could - but its real doubtful. All reports are that he has kept in shape, and if he does come back it would be for the Pats and no other - based on his comments on the way out last year. I picked him up for my RCL team, but thats because I missed the draft and autodraft filled my roster with duds.
Yahoo - 12 Team H2H
STATS: R, H, 2B, 3B, HR, RBI, SB, AVG, SLAM and W's, CG's, SHO, SV, K, HLD, ERA, WHIP
3xOF: Braun, Choo, Pence
SP: Greinke, Peavy, Homer, Milone, Iwakuma, Cashner, Wheeler(NA)
RP: Perkins, Frieri, D. Hernandez, Gregerson
DL: Austin J