; and (4) providing other financial assistance, including advances, payments, and incentives (including the ability of owners to obtain reasonable returns on investment) required by the Secretary. (d) Renewal of rental assistance (1) In general When the Secretary proposes to restructure a loan or agrees to the proposal of an owner to restructure a loan pursuant to subsection (c), the Secretary shall offer to renew the rental assistance contract under section 521(a)(2) for a 20-year term that is subject to annual appropriations, provided that the owner agrees to bring the property up to or maintain the property at such standards that will ensure maintenance of the property as decent, safe, and sanitary housing for the full term of the rental assistance contract. (2) Additional rental assistance (A) In general With respect to a project described in paragraph (1), if rental assistance is not available for all households in the project for which the loan is being restructured pursuant to subsection (c), the Secretary may extend such additional rental assistance to unassisted households at that project as is necessary to make the project safe and affordable to low-income households. (B) Unavailable property In the event that a property is not available to provide additional rental assistance to households under subparagraph (A), the Secretary may offer a rural housing voucher to those households. (e) Restrictive use agreements (1) Requirement As part of the preservation and revitalization agreement for a project, the Secretary shall obtain a restrictive use agreement that obligates the owner to operate the project in accordance with this title. (2) Term (A) No extension of rental assistance contract Except when the Secretary enters into a 20-year extension of the rental assistance contract for a project, the term of the restrictive use agreement for the project shall be consistent with the term of the restructured loan for the project. (B) Extension of rental assistance contract If the Secretary enters into a 20-year