Sam Cassell, a longtime Clippers assistant coach under Doc Rivers, will be joining Rivers in Philadelphia, becoming part of the Sixers‘ staff, according to Keith Pompey of The Philadelphia Inquirer (Twitter link).

A former NBA player who won two titles with the Rockets and a third with the Celtics, Cassell transitioned into coaching after he retired in 2009. He spent five seasons on the Wizards’ staff as an assistant and has worked since 2014 under Rivers in Los Angeles.

Rivers endorsed his longtime assistant as a deserving NBA head coaching candidate last month before he parted ways with the Clippers. Cassell reportedly interviewed to replace Rivers in L.A. and drew some interest from Houston, but the expectation was that he’d continue to work on Rivers’ staff if he didn’t get a head coaching job, per Pompey.