Ratko Mladic may be sent within four days to face genocide charges in The Hague, according to justice officials.
The lawyer for the Bosnian Serb general is appealing his extradition to the International Criminal Tribunal. Milos Saljic says he plans to delay the process as long as possible.
A Belgrade court ruled on Friday that Mladic was fit enough to face trial but his defence claims the 69-year-old is mentally unstable and thus too sick to undergo a hearing.
The appeal court must respond and forward the final decision to the Justice Ministry which will then rule on the extradition straight away, a process that would take up to four days, said
Slobodan Homen, a state secretary.
Mladic is accused of genocide over the 43-month siege of Sarajevo and the massacre of 8,000 Muslim men and boys in Srebrenica during the Bosnian War in 1995.