54ec bonds

Dear All,

My client has purchased REC Bonds for claiming exemptiuon u/s 54EC just a few months back, but now he is interested in buying a property and wants to claim deduction u/s 54. No ROI has been filed till date, as matter belongs to current financial year. 

My question is:- Can I redeem REC bonds before maturity by any possibility? If yes, please elaborate the procedure.

Thanks.