According to the law, you cannot be deported back as an asylum seeker, that is once you have sought asylum and until your asylum claim has been processed.
Most people, when they receive the last negative response to their asylum claim, receive a letter notifying them that they need to leave the country in a period of 30 days. If they do not leave the country in this period, they may be detained in the detention center in Ježevo until their deportation is organised.