Coming into the NBA offseason, it was clear the Boston Celtics could lose either Al Horford or Luke Kornet to free agency. Both big men were in the final year of their respective contracts and would be free to discuss terms with other front offices around the NBA.

The Celtics lost one of their key reserves in free agency as Luke Kornet is headed to the Spurs. Kornet agreed to a four-year, $41 million deal with San Antonio, a source confirmed to MassLive, as the big man got an expected big contract on the open market. ESPN’s Shams Charania was the first to report the deal.

Luke Kornet established himself as one of the most important players on the Boston Celtics over the last two seasons. He finished this past year with averages