Rick Adelman will not return as head coach of the Houston Rockets.

Adelman and Rockets general manager Daryl Morey failed to reach agreement on how they would continue to work together.

In four seasons with the Rockets, Adelman had a 193-135 record, the best winning percentage (.588) of any coach in franchise history. He moved to eighth in NBA history in career coaching wins with 945.

Adelman, 64, had expressed ambivalence about remaining in coaching, but said last week that he has not lost his desire to coach. He had been openly frustrated with decision-making during last season that led to a trio of trades over his objections that seemed designed to aid future seasons.