You never had to sell me on getting Greinke. I am one of the few posters that is not concerned with his ability to handle the Boston pressure.
As for Ortiz, I think he will come back for anything approaching market value. As I said, if he's not back next season, it will be because the FO didn't want him back and they lowball him, I.e., they don't negotiate in good faith. If they negotiate in good faith and make a fair offer, he'll be back.