NRI CAPITAL GAIN

If a assessee who is indian resident at the time of purchasing property but at the time of sales of property assesse status changed to NRI and assesse will reinvest the sales consideration amount received in NRO account in further purchase of property in Indian only. As TDS has to be deducted by the seller @ 20% considering assesse is NRI, but is there any clause in Income Tax act that giving letter to Income Tax authority that the sales consideration will be reinvested in India only , so as to allow deduction of 1% TDS as applicable for Normal Indian Resident.