Possible Clues:

• Encourage debts? It's fraudulent
• Phoney promises to pay for what digs inside
• Forged acknowledgement of debt accepted by football club
• False enough to stick in the side of ten of us
• Incentive to assume debts is not genuine
• Urge to accept promises to pay? That's deceitful!
• False promises to pay for the start of 16 across
• Start to stick it in to make the promises to pay false
• Prompt acknowledgments of debt are not genuine
• Plausible, but false