PHOENIX — Joakim Noah may not rejoin the Knicks until next Thursday in Milwaukee, according to a person familiar with the situation.

Noah still has family and friends in nearby Chicago and it is where his charity foundation, “Noah’s Arc,” is located and run by his mother.

Unhappy with his invisible role, with the Golden State fiasco the trigger point, Noah has taken a leave of absence and left the club Thursday morning in Denver. The Knicks are hopeful he returns sooner.

Coach Jeff Hornacek said there’s a chance Noah would be back after the Knicks finish up their disastrous six-game road trip against the Western Conference on Friday in Phoenix but left it open.

The NBA source said it’s possible Noah will not be around when the Knicks resume action at the Garden on Tuesday against the Nets then play Wednesday in Boston. The Knicks will then travel from Boston to Milwaukee to face the Bucks on Friday.

Meanwhile, an NBA source who has spoken to Knicks brass told The Post their effort to trade Noah and his $72 million contract has ramped up. Nevertheless, in past conversations with teams, the only way clubs would consider taking on Noah’s pact is if the Knicks tossed in their 2018 first-round pick — which is looking more and more like a lottery selection. The Knicks are 4-14 in their past 18 games and have fallen a season-low seven games below .500 at 21-28.

The Knicks refuse to part with their potential lottery pick, even if it would open up major salary-cap space in the summers of 2018, 2019 and 2020. Noah will make $18.5 million next season and $19.2 million in 2019-20. The Knicks still plan to ask teams around the league about Noah. Some in the organization feel he still can help the Knicks defensively.

Noah left the club Thursday morning in Denver after being “pissed,” as one source put it, at being removed in the Warriors game after playing just 4:31 of fourth-quarter garbage time on a night Kristaps Porzingis and Kyle O’Quinn sat out. Noah was visibly upset in the locker room after the game.

Noah didn’t get in until there was 10:09 left in the fourth quarter. He committed a defensive goaltending and threw the ball out of bounds before being pulled with 5:37 left by Hornacek.

Inexplicably, Noah was removed for starter Enes Kanter in a 17-point game. Noah looked anguished as he came out and said something to Hornacek. One source said Noah’s “feelings were hurt.”

Hornacek wouldn’t address why he yanked Noah for Kanter in a blowout.

“That’s two games ago,” Hornacek said. “I’m not going to talk about a game two games ago. We’ve moved on from that and have to play the Suns tonight.”

The Knicks coach didn’t believe the jarring departure by Noah affected the team’s morale and spirit, despite allowing 130 points to the Nuggets.

“I don’t think so,” Hornacek said. “We’re pretty professional with their attitudes. Even when they’re losing, they still come out every night and get themselves prepared.”

Lance Thomas said: “We have to play harder. No excuses.”