"I got word of it in the middle of the game and that's obviously why he didn't play down the stretch," Carlisle said. "I had a chance to speak to him and thank him before everyone got in the locker room for over two and a half great years of being a model pro. I'm going to miss him an awful lot, but I believe he's going to have a great situation with where he's going.
"He's a special guy. He's about all the right things on the basketball floor, in the community. And he's an example for what you want your kids to be."
Barnes left the locker room without speaking to reporters.
Jackson, a 6-foot-8 small forward, is averaging just under 7 points and nearly 3 rebounds per game for Sacramento this season. The Kings selected him in the first round of the 2017 draft out of North Carolina. He'll earn $3.2 million next season and has a team option for just over $5 million in 2020-21.
The trade is all about cap space for the Mavericks as they look to build around their young superstars in Kristaps Porzingis and Luka Doncic. After the deal, Dallas will have around $30 million in room this summer.
Dallas still has time to make more deals before the 2 p.m. CT trade deadline on Thursday. Dwight Powell has been another player rumored to be on the trading block.