Any city, village or incorporated town included in the area of operation of an authority may sell, convey or lease any of its interest in any property or grant easements, licenses or any other rights or privileges therein or with respect thereto to the authority, irrespective of the purposes for which such property or such interest therein may have been acquired. Such city, village or incorporated town is authorized to sell any such property, property rights or interest therein to the authority at private sale without advertisement or competitive bidding, and, in the case of property, property rights or interest therein devoted or dedicated to a public use, the city, village or incorporated town is authorized to make grants to the authority on such terms and under such conditions as it deems advisable. The authority may acquire and accept any such property, property rights or interest therein as it deems necessary or desirable in the development of a project pursuant to this chapter.