It’s June, when the NBA’s two top teams vie in the The Finals, when draft prospects learn their fate and free agents get signed ... or not. This year, it’s also the Summer Olympics in Paris. And it’s all coming up fast. For example, if the Boston Celtics sweep the Dallas Mavericks, the very next day — a week from tomorrow — the Nets can start negotiating with Nic Claxton. The draft is three weeks away and Olympic training camps open three days after that. Not to mention the Liberty’s pursuit of the WNBA Commissioner’s Cup.