information a bank manager needs to increase bank overdraft

The following letter has been received from a client. ‘I gave my bank manager those
audited accounts you prepared for last year. But he says he needs more information before he will
agree to increase my overdraft. What could he possibly want to know that he can’t get from those
accounts? If they are not good enough why bother to prepare them?’
Required:
Outline the major points which should be included in a reply to this letter.