Who the Detroit Pistons point guard will be next season is still up in the air.

Brandon Knight is a possibility, free agents Jose Calderon and Will Bynum remain unsigned for next season and we know it won't be Michigan's Trey Burke after the Pistons passed on him in last week's NBA Draft.

But could Boston's Rajon Rondo be a possibility?

The Pistons have inquired about the availability of Rondo, one of the NBA's premier point guards who has been rumored to be on the trading block.

Rondo, 27, is a four-time All-Star who led the NBA in assists the past two seasons. In seven seasons with the Celtics, he's averaged 11.1 points, 8.3 assists and 1.9 steals while shooting 48 percent.

"The Boston Celtics had barely issued a press release about hiring Brad Stevens (how did they keep their pursuit of him entirely secret?) when speculation began that their coaching acquisition could impact Rajon Rondo's availability on the trade market," writes MassLive's Jay King.

"Though Celtics president of basketball operations Danny Ainge has adamantly stated he is not actively shopping his point guard, at least two teams -- the Dallas Mavericks and Detroit Pistons -- have reportedly called to share their interest in the four-time All-Star. According to several reports, Ainge wasn't thrilled by what Dallas could offer and talks last weekend never became serious.