A senior executive got retired from government department and started working in a company. In f.y. 2007-08 his status was of NRI and taxable income was around Rs. 1.9 lacs only. Now, in the current f.y. he received his pension arrears from his govt. depart. on account of 6th pay commission. Can he claim relief u/s 89, in respect of arrears of pension, related to f.y. 2007-08 amounting to Rs. 2.5 lacs, in current f.y. i.e. 2009-10 ?