Queens native Kyle O'Quinn is coming home.

The Knicks acquired the former Campus Magnet High School big man from the Orlando Magic on Saturday in a sign-and-trade deal, multiple league sources said.

O'Quinn, a restricted free agent, will sign a four-year, $16-million contract and be sent to the Knicks for cash. Orlando also has the rights to swap 2019 second-round picks with the Knicks, a source said.

It was another under-the-radar move in free agency by Knicks president Phil Jackson.

He hasn't landed any big names with the $27 million he had when free agency began July 1, but Jackson is assembling a team filled with young players and assets who have important skill sets that winning teams need.

Thus far, defense and hustle are the areas Jackson has addressed most, two of many shortcomings of last season's 17-65 Knicks team. Carmelo Anthony could use a little more scoring help, but the Knicks still have more moves to make.

The Knicks likely have used up their entire cap space. They still have the $2.8-million room exception to offer free agents.

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The 6-10 O'Quinn, 25, is a hard-nosed, physical player who can knock down shots. He has averaged 5.4 points and 4.4 rebounds in three seasons for the Magic. His 36-minute averages are 13.0 points, 10.5 rebounds and 2.1 blocks.

O'Quinn played 15.0 minutes per game after the Magic took him in the second round in 2012. He likely will have an increased role with the Knicks.

O'Quinn is the fourth pickup by the Knicks in free agency. They reached a four-year, $54-million agreement with 7-foot center Robin Lopez and agreed to two-year deals with shooting guard Arron Afflalo ($16 million) and forward Derrick Williams ($10 million).

Afflalo and Williams have player options for the second years of their contracts and O'Quinn has one for the fourth.

The Knicks have improved defensively, particularly with Afflalo, Lopez and O'Quinn, but they need to add more offense.

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Williams, a disappointment since being taken second overall in the 2011 draft, could add some scoring and likely will get more of an opportunity to play than he did with the Timberwolves and Kings.

The Knicks also could bring back some of their own free agents, including Jason Smith, Lance Thomas and Lou Amundson.

Deals cannot be announced or signed until Thursday.

The Knicks now have 10 players on their roster, and only Jose Calderon (33) and Anthony (31) are older than 30.

Afflalo is 29. Lopez, the twin brother of Nets center Brook, is 27. Williams is 24. Jackson also drafted 19-year-old Kristaps Porzingis and former Notre Dame combo guard Jerian Grant, 22.

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The Knicks set out in free agency hoping to scoop up an All-Star-caliber player or young big man with offensive skills who fit the triangle offense. But Greg Monroe reached agreement with the Bucks, LaMarcus Aldridge opted for the Spurs and DeAndre Jordan chose the Mavericks.

That has forced Jackson to go a different route while still maintaining flexibility for next summer, when Kevin Durant and Mike Conley are free agents.

The Dolan family owns controlling interests in the Knicks, Madison Square Garden and Cablevision. Cablevision owns Newsday.