The Celtics and center Al Horford have agreed to a two-year contract extension worth $20MM, agent Jason Glushon tells ESPN’s Adrian Wojnarowski. The new deal will begin in 2023/24 and keep Horford under team control until 2025.

Horford is currently earning $26.5MM in the final season season of the four-year, $109MM contract he signed with the Sixers in 2019, the last time he reached free agency. The veteran big man left Boston for Philadelphia that offseason despite a widespread expectation that he and the Celtics would work out a new deal. This time around, he and the team have finalized an agreement well ahead of his free agency to avoid a repeat of that situation.