Authorizing the Revenue Commissioner and the City Solicitor, on behalf of the City, to enter into (i) a contract or contracts for a term not to exceed four years for the design, implementation, and management of a securitized sale of the City's liens for real estate tax and possibly other municipal claims; and (ii) a contract or contracts for a term not to exceed four years for the sale of such liens under which the City would be obligated to provide substitute liens or compensation for any defective liens; all under certain terms and conditions. — Open Common Ground