In public and private moments, commissioner Adam Silver has made it clear that the NBA will not return until health officials and the CDC give full clearance. If and when the NBA is able to resume its season in a “bubble” city, one preliminary plan would be a two-week quarantine where teams can utilize facilities again and players can work out in solo settings, then a two-week training camp followed by an abbreviated regular season and playoffs, sources said. It would all take place without fans, according to those sources. Many team executives are preparing for a delayed NBA draft — as late as September.