The NBA and NBPA are finding common ground on a post-Thanksgiving tournament window that would extend into mid-December, league sources said. Months ago, the NBA had proposed a late January-February tournament that would culminate with a Final Four during All-Star weekend, sources said. That idea faded fast. Both the union and team executives expressed concern over that idea. The NBPA was resistant to shortening players’ All-Star breaks and requiring some to potentially participate in the in-season tournament and All-Star weekend.