(d) In order to promote orderly collective bargaining relationships, to prevent labor strife and to protect the interests of the public and the health and safety of the citizens of Illinois, this Section shall not apply to multi-year collective bargaining agreements between public employers and exclusive representatives governed by the provisions of the Illinois Public Labor Relations Act.
Notwithstanding any provision of this Code to the contrary, the corporate authorities of any municipality may enter into multi-year collective bargaining agreements with exclusive representatives under the provisions of the Illinois Public Labor Relations Act.