Ohio Rev. Code Ann. § 709.451
(A) In lieu of filing a petition under section 709.45 of the Revised Code, if the legislative authorities of each political subdivision that may be merged as provided in section 709.44 of the Revised Code agree to a merger and adopt, by a two-thirds vote of each legislative authority, an ordinance or resolution proposing a merger, no election of a commission to draw up a statement of conditions for merger of the political subdivisions shall be held. Instead, the legislative authorities of those political subdivisions shall have one hundred twenty days to enter into a merger agreement that specifies the conditions of the proposed merger, in identical ordinances or a resolution adopted by a simple majority vote of each legislative authority. At a minimum, the proposed merger agreement shall include all of the following: