NBA rules preclude any team -- even the incumbent Thunder -- from discussing contract specifics with Durant or any free agent before 12:01 a.m. ET Friday. Thursday's discussions with the Thunder, however, are more likely to be focused on team direction and broader topics to meet league guidelines.
Durant, who was in Los Angeles filming a TV commercial, was expected to fly to Oklahoma City with agent Rich Kleiman on Wednesday night, sources said.
Durant's first meeting Friday morning in The Hamptons on Long Island will be with the Golden State Warriors before meeting with the LA Clippers later in the day. On Saturday, he will meet with the San Antonio Spursand later the Boston Celtics.
He will conclude his weekend meetings Sunday with the Miami Heat.
Durant, 27, has spent his entire nine-year career with the Thunder franchise. He averaged 28.2 points per game last season and led the Thunder to within one victory of the NBA Finals.
Free agents can't sign a new contract until July 7.
The New York Knicks are still being considered for a possible meeting, in large part because of the strong relationships between Durant and Carmelo Anthonyand Kleiman and Knicks general manager Steve Mills.
The Los Angeles Lakers, who also are hoping to meet with Durant, will not get a meeting, one source said.