According to the official rules of the NBA, free agency opens at 6:00 p.m. ET on Friday. When the clock strikes 6 (or 3 if you’re out west), teams will be permitted to contact free agents, restricted and unrestricted. Phone calls can be made, offer sheets can be tendered. Of course, we can also expect to hear about new destinations for the most sought-after players not long after the sixth chime rings out. It’s the way things go, although sanctions imposed on the 76ers last year for contacting P.J. Tucker and Danuel House Jr. early might have some effect.