What Does Celtics Naming Joe Mazzulla Head Coach Mean For Ime Udoka?

The Celtics announced Joe Mazzulla is head coach and extended his contract, removing the interim head coaching and naming him to the position the team suspended Ime Udoka from before the season. What does this officially mean for Udoka? It's unclear specifically, but it's easy to assume he'll never coach for the Celtics again, whatever route it takes for him to exit.