Marc Stein of ESPN adds that negotiations will not resume until July.
The Warriors opened contract negotiations with Barnes in September, when they offered him a four-year, $64 million extension. Barnes turned down the offer, and was given until Nov. 2 to sign an extension.
Because an agreement will not be reached before the deadline, Barnes will become a restricted free agent after this season.
Barnes, 23, was the seventh pick in the 2012 draft. He started all 82 games last season for the NBA champions, and averaged 10.1 points and 5.5 rebounds, both career highs. He also set career highs in field goal percentage and three-point percentage.
Golden State opens the regular season against the New Orleans Pelicans on Tuesday at 10:30 p.m. ET on TNT.
- Kayla Lombardo