Stern: NBA ready to veto Clippers-Celtics trade By CAROLINE LEE, UPI.com David Stern made it clear that under the current rules of the NBA, teams are not allowed to trade coaches' contracts.
June 21, 2013 - UPI
Stern: Rivers can't be traded NBA commissioner David Stern will not approve any deal that involves a player-head coach trade, putting the simmering trade talks between the Los Angeles Clippers and Boston Celtics on ice.
June 20, 2013 - The SportsXchange via Yahoo! Sports
Stern Skeptical of Proposal to Send Rivers to Clippers Commissioner David Stern cast doubt over a deal in the works to allow Coach Doc Rivers to leave the Celtics for the Clippers, citing a violation of N.B.A. rules.
June 20, 2013 - New York Times