After this last episode, I wonder if they would take the chance on Greinke and his head. They may, but I have to wonder. De La Rosa is a very nice arm and would slot into the rotation next year. He's essentially Jordan Zimmermann. I think Webster is less, but he was their #2 prospect per BA coming into the year.
The knock on De La Rosa is his size, but he has a nice arm and there is no reason not to believe he could slide into the closer role next season. Webster isn't too shabby either, a BA top 100 prospect is nothing to complain about.