Brad Stevens and the Boston Celtics have started to gain permission to interview head coaching candidates, according to ESPN's Adrian Wojnarowski.

Stevens completed interviews with the Celtics assistant coaches in recent days and now has started reaching out to talk to outside candidates, sources said. The initial pool of candidates is expected to be expansive. https://t.co/tu9tuszqLS

— Adrian Wojnarowski (@wojespn) June 9, 2021

With their internal interviews complete, Stevens and the Celtics turn their view outward in search for the team’s next head coach. Wojnarowski noted that the initial pool of candidates is expected to be “expansive,” while Boston has already been connected to names such as Chauncey Billups, Ime Udoka and others at the NBA and college level.

Should the team look to promote from within, Jay Larranaga, Jerome Allen, Scott Morrison and Joe Mazzulla would seem the most likely candidates.