Who backs up Bogut if not O'Neal?

Reports out of Golden State indicate that Jermaine O'Neal continues to mull over retirement, and after 19 years in the league it'd be perfectly understandable if the 1996 draftee decides to hang 'em up.

Injuries to Andrew Bogut forced O'Neal into a bigger role than many anticipated last season, and to O'Neal's credit he played pretty well as a fill-in starter. But if O'Neal isn't on the Warriors' roster in 2014-15, who steps into the backup center spot? Or could something else be in the works?