After breaking the news of the Kemba Walker trade, ESPN’s Adrian Wojnarowski reported that the Celtics have requested second interviews with a trio of head coaching candidates from outside the organization. He is currently an assistant coach under Tyronn Lue in Los Angeles with the Clippers, his first year as a coach.

Udoka, 43, is an assistant coach for the Brooklyn Nets.

Brooklyn’s Ime Udoka, Milwaukee’s Darvin Ham and Clippers’ Chauncey Billups are among head coaching candidates who Boston hopes to interview for a second time, sources tell ESPN. Celtics’ search continues to focus in the assistant ranks.