According to multiple published reports, the Dallas Mavericks and Boston Celtics have engaged in preliminary talks involving star point guard Rajon Rondo. The Mavs are active this offseason, but it won’t be easy to swing a deal for Rondo. Per the Boston Globe: “The Dallas Mavericks, looking to make one final championship run in the Dirk Nowitzki era and looking for a lure to attract Dwight Howard, are interested in acquiring Rajon Rondo from the Celtics, according to an NBA source. Rondo, who has two years left on his contract at a total of $25 million, is considered now the central cornerstone of the Celtics with Paul Pierce and Kevin Garnett headed to the Brooklyn Nets. President of basketball operations Danny Ainge told reporters Thursday the club is planning to build around Rondo and he will not be traded. When asked if he was comfortable with Rondo as the team’s centerpiece, Ainge said: ‘Yes we are. There’s guys we’re not looking to move right now.’ When asked if one of those players was Rondo, Ainge said: ‘Yeah.’”