A person familiar with the decisions confirmed the interview on condition of anonymity because an announcement wasn't made, according to Yahoo Sports.
Casey led Minnesota to a 33-49 record in 2006-07 and was fired 40 games into the 2007-08 season. Casey spent this season on Rick Carlisle's staff in Dallas.
Jordan was let go by the Wizards early last season. He has a losing career record of 230-288 in parts of eight seasons with Washington and Sacramento.
The other known candidates are Boston Celtics assistant Tom Thibodeau and Sixers scout Phil Ford.
The Sixers informed Lakers assistant Kurt Rambis this week he was no longer a candidate.