N.Y. Public Authorities Law § 2536
1.
2. Any resolution authorizing any notes or bonds or any issue thereof may contain provisions, which shall be a part of the contract with the holders thereof, as to:
5. The corporation, subject to such agreements with noteholders or bondholders as may then exist, shall have power out of any funds available therefor, to purchase notes or bonds of the corporation, which shall thereupon be cancelled, at a price not exceeding: