Forward Kyle Kuzma has agreed to a three-year, $40 million extension to remain with the NBA champion Los Angeles Lakers, a person familiar with the deal said Sunday.

The person spoke to The Associated Press on condition of anonymity because the Lakers didn’t disclose the terms of the deal in their announcement of an extension. ESPN first reported the terms of Kuzma’s rookie contract extension, which begins in 2021 and includes a player option for the 2023-24 season.

Kuzma has been a key component of the Lakers’ core for three seasons since the team acquired him in a draft-day trade in 2017.

“It is especially gratifying for our Lakers franchise to draft, develop and now sign one of our own to a contract extension,” Lakers general manager Rob Pelinka said. “Kyle has shown tremendous growth over the last three years, and played a crucial role on last season’s championship team.”

Kuzma made the All-NBA rookie first team in 2018, and the smooth scorer averaged a career-best 18.7 points in his second pro season after the arrival of LeBron James.