It seems like this is the solution: Anytime your debt is sold on, the debtor has the right of first refusal on the price it is being sold for.
If the bank is willing to ding your credit sore and move on through parting with your $1000 of debt for $100, then you should have the opportunity to buy it at that price and be done as well.
If the bank is willing to ding your credit sore and move on through parting with your $1000 of debt for $100, then you should have the opportunity to buy it at that price and be done as well.