One time settlement is not an open offer that prevails all the time. When the opportunity was given it should have been used. IT all depends on the properties available as security, and if the security is more than adequate, the banker is not interested to accept your offer of pittance when the security is abundant. You can only make attempts to convince the banker and you may succeed if the present value of a property is adequate or less. When the value of a security is more, as the banker is an institution, and has to refund such deposits made by the public, sentiments may not play a role. Now, even bankers are facing accountability if they compromise for lesser amounts if the net worth of borrower is on the high side. Consider why Banks and Government are not considering for accepting entire principal amount at one go, though the amount is substantial and banks have secured benefit earlier from him through interest for decades.