Phoenix Suns president and chief executive Jason Rowley has resigned after a report into workplace misconduct allegations that led owner Robert Sarver to sell the NBA club, ESPN has reported.

Rowley, who began working for the Suns in 2007 and served as president since 2012, had told employees he would not resign after ESPN's report last December on Suns workplace complaints, many of which put Rowley at the centre of the problem.

News of Rowley's departure came as the NBA's Board of Governors approved the sale of the Phoenix Suns and women's NBA Phoenix Mercury to an ownership group led by billionaire Mat Ishbia late on Monday.

Suns staff learnt of Rowley's resignation in an email from team governor Sam Garvin, according to the latest report.

"After almost 15 years of hard work and dedicated service, Jason felt that the transition in ownership created ideal timing to close this chapter of his professional journey and pursue new opportunities," the email reportedly said.

"We wish Jason the best and are appreciative of his tireless work on behalf of our organisation."

ESPN had detailed accusations of intimidation, harassment, verbal intimidation and retaliation of Suns team employees two months ago.

That report led to an NBA investigation into the allegations that found racist and misogynist acts, prompting a one-year ban and US$10 million fine for Sarver from the league.

After several sponsors vowed not to support ownership in the wake of the misconduct, Sarver pledged to sell the team. (AFP)