The Wolves fired Casey in January 2007. Specifically, owner Glen Taylor allowed Kevin McHale to fire Casey. McHale hired his buddy Randy Wittman, one of the many decisions that led to the Wolves becoming the worst franchise in the NBA.
At the time of Casey's dismissal, the Wolves were 20-20. They are 87-250 since.
Asked if he wanted the Wolves job, Casey pointed out that the position isn't open, and he refused to lobby for it. Wolves "management" has yet to announce any decision on incumbent Kurt Rambis.