N.Y. State Finance Law § 69-N
1.
(f)
2. Consistent with the provisions of this article, and subject to the approval of the director of the budget, any resolution or other agreement authorizing revenue bonds or any issue thereof may contain provisions, which shall be a part of the contract with the holders thereof, as to:
5. The authorized issuers, subject to such agreements with holders of revenue bonds as may then exist, or with the providers of any applicable bond or note or other financial or agreement facility, shall have power out of any funds available therefor to purchase revenue bonds of the authorized issuers, which may or may not thereupon be canceled, at a price not exceeding: