According to multiple sources:
The New York Knicks parted ways with president Steve Mills, the team announced Tuesday.
General manager Scott Perry will oversee the basketball operations in the interim, the team said.
…
“Steve and I have come to the decision that it would be best for him to leave his role as president of the New York Knicks,” Dolan said in a prepared statement. “We thank Steve for his many years of service to our organization and look forward to continuing our relationship with him as part of our board.