Ohio Rev. Code Ann. § 3307.762
(B) Service credit and contributions may be transferred between the state teachers retirement system and the Cincinnati retirement system as specified in sections 3307.763 and 3307.764 of the Revised Code if both of the following conditions are met:
(2) The state teachers retirement system and Cincinnati retirement system, through their boards of trustees, enter into an agreement governing the transfers that is consistent with the requirements of sections 3307.763 and 3307.764 of the Revised Code and includes both of the following:
(D)
(1) The state teachers retirement system, through its board of trustees, and the Cincinnati retirement system, acting pursuant to the authority granted it by the Cincinnati city council, may do either of the following: