The Red Sox are expected to announce Thursday that Hall of Fame manager and former Diamondbacks executive Tony La Russa has joined the organization.

His exact role is unclear, but a source told the Herald that La Russa’s next stop will be in Boston following four years in Arizona’s front office, a stint as special assistant to the league’s commissioner, and 33 years as a manager in Chicago, Oakland and St. Louis.

La Russa, who turned 73 last month, stepped down from his role as Diamondbacks chief baseball analyst two weeks ago. He spent the previous two years as the team’s chief baseball officer.

“I’m not gonna sit home,” La Russa told the Arizona Republic when he stepped down. “I’m gonna do something. I’ve had a few calls already that people are interested. So, we’ll see what’s out there.”

The Red Sox would not confirm or deny that La Russa is joining the organization, but a team source did say he will not be new manager Alex Cora’s bench coach. La Russa is expected to take a non-uniform role in the front office. President of baseball operations Dave Dombrowski said MLB rules don't allow teams to comment on moves until after the World Series.