Where tax-forfeited lands have situated thereon buildings or personal property which are deteriorating, the Secretary of State may sell and dispose of the buildings, personal property and land for any consideration he may deem reasonable, irrespective of the amount of taxes for which same was sold. Where the buildings or personal property have deteriorated to the condition they are unsafe or constitute a nuisance, the Secretary of State, in determining the sales price for the land, may take into account the cost of cleanup and removal of the buildings and personal property situated thereon, or may contract with the purchaser for cleanup and removal of the buildings and personal property as part of the consideration for sale of the land.