assigning future property in equity cannot be gratuitous. the assignor must receive consideration for the agreement, otherwise the assignment will be ineffective. however, an absolute assignment does not require consideration to be given. secondly, between the period of agreement between assignor and assignee and acquisition by the assignor, the assignees rights are not contractual, but rather a proprietary right to the property. this means the assignee has an interest in this future property, in the same manner any owner has over property.