Hopefully, there will be Harang, Arroyo, NGWIG (new guy who is good).
Then we can have some combo of Lohse, Milton, Claussen, EZ and at some point Bailey to fight for the other two slots.
My guess is that, absent a trade, Milton and Lohse will fill the slots, if Milton is healthy. Otherwise EZ. I see Claussen rehabbing for awhile and Homer starting at AAA.