Dallas Mavericks general manager Nico Harrison is confident about re-signing Kyrie Irving despite the side's disappointing late-season slide that saw them miss the playoffs.

The Mavs endured a 7-18 run to end the season, missing the play-in tournament altogether with an 11th-place finish in the Western Conference.

That came after they traded in Irving in February to become a championship contender. The All-Star guard quickly asserted he would not discuss a contract extension publicly following the trade.

Irving is eligible to sign for as much as $272 million over five years at the Mavs, or around $202m for years at another franchise, leading to questions about his future.

Harrison met with Irving on Monday for his exit interview after the Mavs' season ended on Sunday.

"I think the things that he said along the way about how he feels here, how he feels appreciated, how he feels accepted and allowed to be himself - those are the things that he said kind of consistently," Harrison said.

"That's what gives me the optimism that he wants to be here."

The Mavs struggled for synergy in their backcourt with Irving alongside Luka Doncic following the trade, leading to talk that the star-studded pairing is not worth persisting with.

"I think the two work together," Harrison said. "I think Luka and Kai work together.

"I think when we have that talented of a player - that talented of two players - I think they work together.

"I really think it's the players around them… kind of knowing their role with having those two guys out on the floor at the same time. I think that's the thing that we need to work on."

Harrison was also bullish about Doncic's long-term future, with the Slovenian offering assurance after Sunday's game saying he is happy in Dallas.

"Well, I take his words for it," Harrison said. "He says he wants to be here.

"He's under contract, so I don't go to sleep at night worried about, 'is Luka going to be a Maverick?' Because he is a Maverick, and he's under contract.

"Obviously, if that changes, then we'll have to reevaluate it. But I think our job really to keep Luka happy, if you will, is surrounding him by the right players to help him win. And I think Luka's a talent that deserves that."