Notwithstanding the provisions of sections 18-100d, 54-124c and 54-125a, any person who has six months or less to the expiration of the maximum term or terms for which such person was sentenced, may be allowed to go at large on parole pursuant to section 54-125i or following a hearing pursuant to section 54-125a, provided such person agrees (1) to be subject to supervision by personnel of the Department of Correction for a period of one year, and (2) to be retained in the institution from which such person was paroled for a period equal to the unexpired portion of the term of his or her sentence if such person is found to have violated the terms or conditions of his or her parole. Any person subject to the provisions of subdivision (1) or (2) of subsection (b) of section 54-125a shall only be eligible to go at large on parole under this section after having served ninety-five per cent of the definite sentence imposed.