Oklahoma City coach Billy Donovan won't be returning to the Thunder next season, sources tell ESPN.
Donovan's contract expired at season's end and the sides have decided against pursuing an extension.
Discussions between OKC management and Donovan were described as collaborative and realistic.
The reality of Oklahoma City's eventual transition toward a rebuild made it a challenge for the two sides' to find a way to continue forward together, sources said.
Donovan's contract expired with the Thunder's season ending in a Game 7 to the Houston Rockets in the first-round of the Western Conference playoffs.