BULGARIA - PENAL PROCEDURE CODE
Part two. EVIDENCING
Chapter thirty six. PROCEDURES IN CONNECTION WITH INTERNATIONAL COOPERATION ON PENAL CASES
Section 1 Transfer of Convicted Persons
Art. 454. (1) The consent of a Bulgarian citizen convicted by a foreign court or of a foreign citizen convicted by a Bulgarian court shall not be required for the transfer when:
1. the sentence or the subsequent administrative decision of the state, which has convicted the person, includes an order for expulsion (deportation) or another act under which the person, after his/her release from the place of imprisonment, cannot stay in the territory of the state, which has convicted him/her;
2. before serving the sentence, the convicted person has fled from the state, which has convicted him/her, to the territory of the state whose citizen he/she is.
(2) In the cases under Para 1, item 1, before enacting the decision for transfer, the opinion of the convicted person shall be taken into consideration.
Art. 455. The place, time and procedure for transmitting and receiving the convicted person shall be determined by agreement between the chief prosecutor and the competent authority of the other state.
Cooperation under procedures of national law
Consent to surrender
EDIT.