Kevin Durant is staying put in Brooklyn. And the Nets aren’t just running it back for a year — they’re together for the long term.

Nets general manager Sean Marks said in a statement Tuesday that after a face-to-face to clear the air, the Nets and Durant — who’d first requested a trade, then the firing of Marks and coach Steve Nash in order to stay — are “moving forward” together to chase the franchise’s first-ever NBA championship.

A highly placed Nets source amplified that this was not simply a case of cajoling Durant to stay for the upcoming season, to take a final all-or-nothing shot at a title with Kyrie Irving before trading him next summer. While Durant could always make another heel turn, all parties left that meeting at least expecting this to be a long-term marriage, albeit one with plenty to work through.

“We want to build a lasting franchise,” the source told the Post, “so this is not just about this year.”

That tete-a-tete in California — where Durant had been spotted last weekend working out with Irving — included all the powers-that-be in this long-running melodrama that largely held the entire NBA hostage for nearly two months: Marks and Nash — both of whom Durant had wanted fired — as well as Durant’s business partner Rich Kleiman, Nets owner Joe Tsai and his wife, Clara Wu Tsai.

“Steve Nash and I, together with Joe Tsai and Clara Wu Tsai, met with Kevin Durant and Rich Kleiman in Los Angeles yesterday. We have agreed to move forward with our partnership,” Marks said. “We are focusing on basketball, with one collective goal in mind: build a lasting franchise to bring a championship to Brooklyn.”

The Post had reported weeks ago that Durant was trending toward being present at training camp, which starts Sept. 27. But after this meeting the Nets expect Durant to fulfil the four-year, $198 million extension he signed last August that kicks in this upcoming season.

“It’s exciting knowing he’s coming back on board with us,” Nets center Nic Claxton said. “I feel like we’re going to have a really, really good group. So we’ve just got to get everybody together and lock in.”

Durant had initially requested a trade out of Brooklyn on June 30, a day after Irving had concluded testy contract negotiations by picking up his $36.5 million player option for this coming season.

The Nets made it clear they didn’t want to trade Durant and demanded a king’s ransom for the four-time scoring champion.

The Post had reported on July 12 that Irving intended to stay in Brooklyn and remain a Net, and that the team was likely to hold onto Durant. And despite the sides’ clear differences, they both avoided saying anything publicly that needed to be walked back.

Earlier this month, Durant met with Tsai in London and reiterated his desire to be traded. Sources told The Post that he then requested the firing of Nash, while the Athletic reported that he also wanted Marks removed. But Tsai backed his coach and GM. He stood his ground, and in the end, Durant came around.

It remains to be seen how much reconciliation is needed between Durant and the men he tried to get fired. It should also be noted that he went from inking a deal without a no-trade clause or trade kicker a year ago to requesting a trade in June, from wanting his GM and coach fired two weeks ago to supposedly buying in now.

The drama brings to mind the summer 2007 episode when Kobe Bryant went on LA radio and requested a trade from the Lakers. But after testing the market and finding nothing to approximate the all-time great, the Lakers held onto him and reached the Finals that following season, with Bryant winning MVP.

He led them to consecutive titles the next two years. The Nets can only hope to approach that level of success — and with Durant anchoring a core of Irving, Claxton, Ben Simmons, Joe Harris and Seth Curry, they have no excuse not to contend for one.