Two fold answer.
Will Arte open the pocketbook? If the answer is no, then it won't matter who we have as a manager.
Now say Arte opens up the pocketbook. Then while not ideal, Girardi has to be in the running. If Torre is not slated to be the next commish, he has to be talked to. Not sure what Davey Johnson's status really is, but you could give him a call. You could inquire with the Padres about Black, and the Brewers about Roenicke. Tony LaRusa is without a job right now I believe. These are the main one's that come to mind, I'm sure there are a lot more.