If the Agent's notice under Clause 5.8 is served after an Advance is borrowed, the Borrowers, the Agent, the Lenders or (as the case may be) the Affected Lender and the Swap Bank shall use reasonable endeavours to agree, within 30 days after the date on which the Agent serves its notice under Clause 5,8 (the "Negotiation Period"), an alternative interest rate or (as the case may be) an alternative basis for the Lenders or (as the case may be) the Affected Lender to fund or continue to fund their or its Contribution during the Interest Period concerned