NBA free agency has dawned. Ask conventional wisdom, though, and she’d just as soon tell anyone dreaming of big movement this offseason to hit the snooze button again.Whether Malik Monk (Sacramento) and Pascal Siakam (Indiana) set a trend by re-signing with their teams early in free agency remains to be seen.Still, the landscape is surely altered because teams can negotiate with their players one day after the NBA Finals conclude. There are also various wrinkles to the league salary cap. Second apron, anyone?In any event, big names abound. The following players are available, by definition: Let’s take a look at some headliners.LeBron James, Los Angeles LakersDoes James want to take his talents elsewhere this summer? He can do so by opting out of a $51 million player option in Los Ange…