Who's Tom Thibodeau?

Tom Thibodeau has spent 19 years as an assistant coach in the NBA, but has yet to be a head coach.

The 76ers plan to find out why, and what type of candidate he is to become their next coach. They probably already know a lot about him, but the public might not, in part because Celtics' assistants are not free to speak with the media during the NBA season.

Thibodeau appears to be next in line after president/general manager Ed Stefanski's sessions with Eddie Jordan, Dwane Casey and Kurt Rambis.

Celtics' coach Doc Rivers said of Thibodeau, ''He's terrific, has unbelivable knowledge, has been so good for me and my staff. He knows the game, is a great teacher. In some ways, he's so good defensively people overlook his overall knowledge.''

We'll tell you a little more about Thibodeau, also on the radar of the Sacramento Kings, in Thursday's Daily News.