The Philadelphia Inquirer (Kate Fagan) reports: The 76ers confirmed they met yesterday with Boston Celtics assistant coach Tom Thibodeau about their head coaching vacancy, bringing the number of interviewed candidates to four. The Sixers would not comment further on the interview, and Thibodeau could not be reached for comment. The Sixers called the Celtics for permission last weekend. Thibodeau joins former Washington Wizards coach Eddie Jordan, current Los Angeles Lakers assistant Kurt Rambis, and Dallas assistant Dwane Casey as the four known candidates on the list of Sixers general manager Ed Stefanski.