From the KRIV in Houston:

"The New York Yankees committed an awful lot of money to me and put it in my hands, gave me a player option and trusted me with that option," Pettitte said in an interview Tuesday with FOX 26 Sports. "It probably wouldn't be real honorable for me not to do anything other than if I shut it down, shut it down or go back and play for the New York Yankees."

He also said that the manager swap wouldn't effect his decision and that all 3 guys the Yankees interviewed would have been good.

Via Bobcat via the AP.