Billionaire Elon Musk has said he aims to complete his purchase of Twitter by the end of the month, but the company “will not take yes for an answer”.
In a court filing, he said the social media platform had raised concerns about the “theoretical possibility of a future failure to obtain debt financing” to pay for the deal.
Twitter said it did not trust that the offer would come through.
Twitter sued Mr Musk in July after he tried to back out of buying the firm.
Mr Musk asked the court to put that legal fight on hold.