The recent rumors of Danny packaging Gabe Pruitt with various other Celtics in an effort to bring in some veteran help for the bench tells me a couple of things.
First, Gabe Pruitt won't be the back-up point guard come April.
Second, Sam Cassell may start to see some playing time. Probably after the trade deadline, but perhaps before, depending on the circumstances. Even if the green were to somehow land Star Berry, I wouldn't rule out situations where the Celtics play both Cassell and Marbury together.
Experience is the name of the game once the playoffs start.