The person spoke to The Associated Press on condition of anonymity on Thursday because the deal is still awaiting league approval.
Dalembert was Philadelphia's longest-tenured player, but he never developed into a dominant force after being drafted in the first round in 2001. The 6-foot-11 center averaged 8.1 points and 8.3 rebounds over eight seasons. He was unhappy with his role and asked for a trade last year.
Nocioni, a 6-foot-7 forward, averaged 8.5 points for the Kings last season. Hawes, a 7-foot-1 center, averaged 10 points and 6.1 rebounds last season. Hawes was Sacramento's first-round draft pick in 2007.
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AP Sports Writer Dan Gelston contributed to this report.