Knicks Lose Mitchell Robinson to Celtics After Championship Run. Here’s the Deal.

Mitchell Robinson is leaving New York. The Knicks’ starting center and defensive anchor has agreed to a three-year, $47.4 million deal with the Boston Celtics, according to ESPN’s Shams Charania. The contract includes a player option on the third year.

The move ends Robinson’s seven-year run with the Knicks, a tenure that culminated in the franchise’s first NBA championship since 1973. But it didn’t take long after that title win for the writing to appear on the wall.

Knicks owner James Dolan had acknowledged publicly that the team wanted to avoid crossing the NBA’s restrictive second apron, a luxury tax threshold that handcuffs roster-building flexibility. Keeping the whole championship core together was never really the plan. Something had to give. And Robinson, one of the team’s top unrestricted free agents, became that something.

So Boston pounced.

What Robinson brings to the Celtics

When healthy, Robinson is one of the league’s more impactful defensive centers. He blocks shots, cleans the glass and alters everything around the rim. That’s exactly what the Celtics need as they retool around Jayson Tatum and Jaylen Brown. Boston’s frontcourt has been a work in progress, and adding a proven interior presence like Robinson should help stabilize things on that end.

During New York’s playoff run, Robinson’s rim protection was key. He allowed Jalen Brunson, Karl-Anthony Towns and OG Anunoby to play more aggressively on the perimeter, knowing the backline was covered. That kind of safety net is hard to replace.

Robinson’s offensive rebounding is a weapon too. He creates second-chance opportunities without needing plays called for him. On a Celtics team with plenty of shot creators, that’s a clean fit.

A tough goodbye for the Knicks

New York now has to figure out how to replace a guy who was central to their title identity. The Knicks have kept a few key pieces this offseason, but losing Robinson is a real blow. He was a fan favorite, a hustle guy who did the dirty work. The franchise doesn’t have an obvious replacement waiting in the wings, either.

The second apron thing is real. Dolan wasn’t bluffing. And now the Knicks are learning what that line in the sand actually costs you.

For Boston, this is a swing worth taking. Robinson’s health is always a question — he’s missed significant time over the years — but at $15.8 million a year with a player option, the risk is manageable. If he stays on the court, the Celtics just got a lot harder to score on.