21. (1) Where the consent of a sentenced person is required under section 13(1), he or she may withdraw his or her consent at any time before a decision by the competent authority of the executing state to recognise the judgment and enforce the sentence in that state.

(2) Where subsection (2) of section 13 applies, the consent required under subsection (1) of that section may be withdrawn in accordance with subsection (1) by the legal representative of the sentenced person or any other person considered by the Minister to be an appropriate person for that purpose.