Is Rajon Rondo  again on the trading block?
According to Sunday’s Boston Globe, the Pistons are offering  point guard Brandon Knight  and an expiring contract for Rondo. Knight, a very talented 21-year-old point who was the eighth overall pick in the 2011 draft out of Kentucky, is due just $2.793 million this season and won’t be a restricted free agent until 2015-16. He has a team option next season of $3.553 million.
It is likely to take a lot more than that and Celtics  president of basketball operations Danny Ainge knows it.
Rondo is in the fourth year of a five-year contract that will pay him $11.945 million this coming season. Ainge signed Rondo to a very team-friendly five-year, $55 million rookie scale extension on Nov. 2, 2009. Rondo was rumored to be upset before the 2011-12 season because he was not getting the big money that guards like Chris Paul , who just signed a five-year, $107.3 million deal with the Clippers.
Rondo won’t be a free agent until after the 2014-15 season, during which he will make $12.9 million.
Also consider, the Pistons still need to pay Charlotte a first-round pick (Bobcats’ choice) sometime between now and 2016. Until that pick has been formally traded, the Pistons would be unable to offer a team like the Celtics any first-round pick, something Ainge is trying to stockpile as he rebuilds his roster with young talent.
And there’s this: Ainge insists he’s not looking to trade the oft-rumored malcontent. And, not surprisingly, new head coach Brad Stevens  maintains there’s no doubt Rondo is his starting point guard.
But until the season begins, there will be speculation as to whether Rondo is the right man to lead this group forward. Sunday’s story is just another possible step in that direction.