8:21am: The proposed five-year extension the sides are negotiating would run until 2021, according to Eddie Sefko of the Dallas Morning News, so that means the five years would start after this season.
4:49pm: The Mavericks and Rick Carlisle are nearing a deal as they hold advanced discussions about what would be a five-year extension, reports Marc Stein of ESPN.com (Twitter link). Carlisle’s contract status beyond this season has been up in the air. Carlisle signed a four-year deal before the 2012/13 season, though at least one report at the time indicated that it included a team option for 2016/17. In any case, the sides have yet to resolve Carlisle’s contractual future with the Mavericks beyond this coming June, even though owner Mark Cuban said a few weeks ago that he and Carlisle shared interest in continuing their partnership for the long term. Mavs president of basketball operations Donnie Nelson said this past spring that Carlisle could remain with Dallas as long as he wanted to, Stein points out.
Carlisle, who turns 56 on Tuesday, is the president of the NBA Coaches Association and one of the most respected in his field. He guided the Mavs to the NBA title in 2011 and has held the job since May 2008, making him the third longest-tenured head coach in the NBA.
He won Coach of the Year honors for the Pistons in 2002, his first season as an NBA coach. Carlisle led Detroit to back-to-back 50-win seasons before a four-year tenure with the Pacers. He’s 619-431 over 13 full seasons as an NBA head coach, though that doesn’t include a 57-58 postseason record. For Dallas, he’s gone 338-220 in the regular season and 27-26 in the playoffs.