Unless waived by the Administrative Agent, the Borrowers shall have paid all reasonable fees, charges and disbursements of counsel to the Administrative Agent to the extent invoiced prior to or on the Closing Date, plus such additional amounts of such fees, charges and disbursements as shall constitute their reasonable estimate of such fees, charges and disbursements incurred or to be incurred by them through the closing proceedings (provided that such estimate shall not thereafter preclude a final settling of accounts between the Borrowers and the Administrative Agent).