Totally agree, which is why maybe it's a multi player deal -
To TOR:
INF Aaron Hill ($12M 2015, $12M 2016)
LHP Wade Miley ($0.5235M 2015)
RHP Brad Ziegler ($5M 2015, $5.5M Club Option 2016/$1M Buyout)
C Tuffy Gosewisch ($0.5M 2015)
To ARZ:
RHP RA Dickey ($12M 2015, $12M 2016 Club Option/$1M Buyout)
C Dioner Navarro ($5M 2015)
C Josh Thole ($1.75 2015)
We really shouldn't have to add a pitching prospect considering we're taking on $12M of Aaron Hill's guaranteed salary for 2016 but the DBacks might insist.
EDIT: Maybe we could substitute Ziegler as suggested Randall Delgado ($0.51M 2015) or Evan Marshall but now it's gonna cost us more.