The Celtics have made inquiries about Leonard, ESPN's Adrian Wojnarowski reported earlier this month.
More from Sam Amick's story in USA TODAY:
Fellow West teams have been told, in essence, to get lost – none moreso than the Lakers, according to ESPN. As it stands, the Spurs are determined to either fix the situation or trade Leonard to an Eastern Conference team. For teams other than the Lakers, the threat of losing Leonard in free agency next summer makes the prospect of offering meaningful assets a complicated, calculated risk.
Spurs coach Gregg Popovich flew to San Diego earlier this week to meet with Leonard, who reportedly will tell any team he's traded to that he intends to sign with the Los Angeles Lakers or Clippers when he becomes a free agent next summer.
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