In this Oct. 10, 2016, file photo, San Antonio Spurs head coach Gregg Popovich, right, talks with assistant Ime Udoka during the first half of a preseason NBA basketball game against the Detroit Pistons in Auburn Hills, Mich. Credit: Paul Sancya / AP

The Boston Celtics will be the first team to fill their head coaching opening this offseason. A league source confirmed to MassLive.com that Brooklyn Nets assistant coach Ime Udoka is finalizing a contract with the team to become their new head coach. Adrian Wojnarowski of ESPN.com was first to report the news, noting that Udoka had separated himself during the search process and had the support of several Celtics players who played under him at the 2019 World Cup.

Udoka was among a group of external assistant coaches who received a second interview for the position in the past week, out of a list that included Clippers assistant Chauncey Billups and Bucks assistant Darlin Ham.

Udoka played seven seasons in the NBA, primarily with the San Antonio Spurs as a 6-foot-6 wing before retiring in 2012.

He joined Gregg Popovich’s staff as an assistant coach in 2012, winning a championship with the franchise in that role in 2014. He was hired as a lead assistant with the Philadelphia 76ers in 2019 before moving onto Steve Nash’s staff in Brooklyn this past year.

Story by Brian Robb, Masslive.com.