I think workout is meant here in a more concrete debt context:
Workout
Informal repayment or loan forgiveness arrangement between a borrower and creditors.
workout
1. The process of a debtor's meeting a loan commitment by satisfying altered repayment terms. For example, a firm in Chapter 11 bankruptcy proceedings might reach an agreement with its creditors for ways in which the firm's obligations can be worked out.
2. A range of prices within which a transaction or a series of transactions is likely to take place. For example, a market maker might quote a price range within which he or she would attempt to buy or sell a large order of securities.

I know banks sometimes sell workout portfolios, i.e., nonperforming portfolios they want to get rid of; they're called Workout-Portfolios in German (see also Google results below), so I assume you can use Workout in German