First of all since you are not the registered owner of the land how will you sell it as you have mentioned LDA has not registered a deed in your name?
However if you are going to sell the land based on the agreement between you and LDA i.e. you are going to transfer your rights in a property then such capital gain will be taxed in the year when you transfer your rights by making a sale agreement. I don't think you will be able to make a sale deed as you are not the registered owner of such land.
Therefore according to my observation you will be taxed this year and you can exempt yourself from capital gain by investing such money in bonds specified under 54EC or in a residential flat mentioned under 54F.
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