I'd go out on a limb and have to say it's the Packers.
For two reasons...
-he's releasing it early so he wants to get the favorite in in case the line goes up another half point.
-he has something against the Bears. Two of his biggest plays 4 years ago were on or against the Bears and he lost both. One he had Chicago minus double digits versus Arizona on MNF and they barely won the game. Then he faded them at home versus the Saints in the NFC Championship Game and the Bears rolled. He has never gotten over it. He also doesn't like Jay Cutler.