Mitchell Robinson, the longest-tenured member of the New York Knicks and a central figure in their historic 2026 NBA championship run, is officially heading north to join the Boston Celtics. The 28-year-old center has agreed to a three-year, $47.4 million contract with Boston, with sources confirming there is a player option in the third season. This move not only shakes up the Eastern Conference landscape but also signals a new era for both franchises as they recalibrate after a dramatic postseason.
Robinson’s departure from New York comes as a gut punch to Knicks fans still basking in the afterglow of the team’s first title in 53 years. Drafted in the second round out of Western Kentucky in 2018, Robinson spent eight seasons with the Knicks, enduring more than his fair share of injury setbacks. He played over 70 games just once in his career, but when healthy, he was a force—especially on the offensive glass. Last season, Robinson appeared in 60 games, averaging 5.7 points, 8.8 rebounds, and 1.2 blocks in just under 20 minutes per game. His 4.2 offensive rebounds per night ranked him second in the entire NBA, a testament to his relentless activity around the rim.
During the Knicks’ championship run, Robinson’s impact was felt on both ends of the court. He averaged 4.8 points and 5.5 rebounds in just under 14 minutes per playoff game, even as he worked his way back from a broken right pinkie finger suffered between the Eastern Conference Finals and the NBA Finals. His defining moment came in Game 2 of the Finals against the San Antonio Spurs, when he was tasked with guarding Victor Wembanyama. With the Knicks clinging to a one-point lead, Robinson forced Wembanyama to miss a 20-foot jumper at the buzzer, sealing a 105-104 victory and a crucial 2-0 series lead. As Knicks coach Tom Thibodeau said after the game, “What I’m proud about more than anything else, Mitch defended him the right way. Wemby is iconic. If he makes a shot, he makes a shot. You’re not blocking a shot. You make him work; you lead with your chest. You show your hands, and you embrace those details while trying to guard him and then box out. It started with Mitch, and it ended with the other four guys boxing out. So just a heck of a job by Mitch guarding the most iconic player in the world.”
Despite his postseason heroics, Robinson’s future in New York was clouded by financial realities. Knicks owner James Dolan made it clear he would not take the team above the NBA’s second luxury tax apron, a line in the sand that ultimately forced the front office’s hand. The Knicks managed to re-sign key rotation players like Landry Shamet, Jose Alvarado, and Mohamed Diawara, but Robinson’s market value had soared beyond what New York could afford. “It’s no surprise the Knicks didn’t elect to sign Robinson given the team’s cap situation and the organization’s desire to avoid the second apron,” reported ESPN’s Shams Charania.
Boston, meanwhile, pounced at the opportunity. The Celtics, who finished last season with 56 wins and the No. 2 seed in the East, were bounced in the first round of the playoffs by the Philadelphia 76ers. Their frontcourt was exposed—Neemias Queta struggled with foul trouble, and Nikola Vučević, who was acquired midseason, returned to Orlando in free agency. The Celtics’ need for rim protection and rebounding was glaring, and Robinson fits that bill perfectly. “Boston’s bet is on Robinson staying healthy,” wrote NBC Sports. “Robinson brings toughness and athleticism that the Boston frontcourt needed—once Joel Embiid entered the mix, the 76ers pushed the Boston front line around with little resistance. Robinson helps answer that question.”
The Celtics are bringing Robinson in using the mid-level exception, which starts at $15 million next season and keeps the team hard-capped at the first apron. While Boston reportedly made a run at superstar Giannis Antetokounmpo, who was ultimately traded to the Miami Heat, the team pivoted to Robinson after letting Vučević walk. In Boston, Robinson has a real opportunity to compete for a starting role, something that was never truly in the cards in New York with Karl-Anthony Towns entrenched as the starting center. The Celtics’ approach will likely be center-by-committee, with Neemias Queta and possibly Luka Garza sharing minutes to manage Robinson’s workload and help him stay healthy for the postseason.
Robinson’s reputation as one of the league’s best offensive rebounders is well deserved. He has averaged at least four offensive boards per game in four of the last five seasons and provides a much-needed boost of athleticism to a Celtics team that finished last in dunks last year. His rim protection and pick-and-roll defense will be vital, especially as the Celtics look to shore up their interior against Eastern Conference heavyweights. There are still concerns about his durability—he played only 48 games combined in the two seasons prior to 2025-26 due to ankle and other injuries—but Boston’s depth at the position should help mitigate those risks.
Robinson’s free throw shooting remains a known weakness, and opponents have sometimes employed the "hack-a-Mitch" strategy to exploit it. Ironically, Celtics coach Joe Mazzulla was one of the first to use this tactic aggressively during the 2025 playoffs, intentionally fouling Robinson to get him off the court. But as Robinson himself has noted, “the strategy was a sign of respect from opponents trying to get him off the court.” Mazzulla’s admiration for Robinson is no secret, and with the center now wearing green, Boston fans hope his presence will force opponents to rethink their approach. If Robinson starts and the Celtics avoid the bonus early, the hack-a-Mitch strategy may be less effective.
For the Knicks, the focus now turns to finding a replacement. League sources have pointed to Kevon Looney as a likely target to fill the veteran center role at a lower cost. New York’s ability to retain most of its championship roster while staying under the tax threshold is a testament to the front office’s planning, but losing Robinson stings—his rebounding, defense, and sheer presence in the paint were instrumental to their title run.
Boston’s offseason moves didn’t stop with Robinson. The team also signed veteran guard Mike Conley Jr. to a one-year deal, adding experience and depth to the backcourt. Meanwhile, questions linger about the future of star wing Jaylen Brown, who has three years and $182 million left on his supermax deal. Celtics president of basketball operations Brad Stevens addressed the speculation, stating, “Jaylen Brown is a big part of us. I don’t want to predict the future. I look at it as this is our team.”
As the dust settles on a wild NBA offseason, one thing is clear: Mitchell Robinson’s move to Boston has reshaped the balance of power in the East. Celtics fans are eager to see if his rebounding prowess and defensive grit can help propel the team back into championship contention. For Robinson, it’s a fresh start and a chance to prove he’s more than just a role player—he’s ready to be the anchor in the paint for a franchise hungry for redemption.