Noted film-maker Roman Polanski is preparing to pay out a "very, very significant" amount of cash in bid to land bail, according to his lawyer.

According to reports, the Oscar-winning-director was taken into custody in Switzerland in September on the request of Los Angeles law officials, who want to extradite Polanski to the US to face sentencing over his assault on a 13-year-old girl in 1977.

He fled to France in 1978 before he could receive his punishment and has never returned to US.

Despite calls from his victim to drop the charges, Polanski has been refused bail on two separate occasions over worries he is a "flight risk".

But the film-maker's legal team is set to file a new bail offer. Polanski's lawyer Herve Temime told a French radio station the offer will be "very, very significant" and his client will not be "like a fugitive" if he was released from custody.