BRUSSELS—A deal to reduce Greece’s debt burden could include capping interest payments, extending debt maturities and linking debt repayments to economic growth, according to a paper drawn up by the eurozone’s bailout fund.

The nine-page document, dated Aug. 10 and seen by The Wall Street Journal, was put together by the European Stability Mechanism, the Luxembourg-based eurozone bailout fund, and outlines different options to reduce Greece’s large debt load.

The...