The Boston Celtics will keep their head coach, Joe Mazzulla, for a few more seasons. More news: Celtics Star Has Bold Goal for Upcoming Season Without Jayson Tatum The Celtics and Mazzulla agreed to a massive multi-year contract extension on Friday.

Mazzulla and Tatum were there for the assembled fans of the team, who came out to celebrate the new center while meeting favorite Boston sports figures.

The Celtics star and head coach joined city leaders in Manton Heights to celebrate a new early childhood education center, partially funded by the team’s Shamrock Foundation.