Karlheinz Schreiber's extradition date may be put off past this Saturday.

The Justice Department has told Schreiber's lawyers that it will not fight a judicial stay of surrender if it is handed down on Friday by the Ontario Court of Appeal. That's where Schreiber's legal team will make the case to have an earlier extradition order set for Dec. 10 stayed.

Schreiber is fighting possible extradition to Germany where he is wanted on tax and corruption charges. The stay -- which will be indefinite -- is almost certain to be granted by court.

Opposition members have been calling on the Justice Minister Rob Nicholson to delay the extradition so that Schreiber can testify before a parliamentary ethics committee and a yet-to-be-established inquiry into the so-called Mulroney-Schreiber affair.

Schreiber has alleged that he gave Brian Mulroney $300,000 in cash shortly after the former prime minister left office. He also alleges that he and Mulroney held business meetings while Mulroney was still prime minister. Mulroney has denied the allegations, which have not been proven in court.

On Wednesday, Schreiber left the Toronto West Detention Centre -- where he has been kept pending extradition -- and was taken by authorities to Ottawa where he has been called to testify Thursday before the ethics committee.

There is a request that he be allowed to stay at his Ottawa home so that he can have access to documents he says he needs for his testimony. But he is expected to spend the night at Ottawa Detention Centre, where he arrived mid-afternoon on Wednesday wearing an orange jumpsuit.

On Tuesday, Speaker of the House of Commons Peter Milliken issued the rare warrant to have Schreiber brought before the committee to shed light on his past dealings with Mulroney.

Schreiber's lawyer Edward Greenspan has told CTV News his client will only testify before the committee if certain conditions are met. Those stipulate that Schreiber not be required to wear handcuffs, that he is allowed to wear a suit, and that he is given access to his own documents.