N.C. Gen. Stat. § 148-65.9
The Post-Release Supervision and Parole Commission, with the concurrence of the Secretary of the Department of Adult Correction, may direct that the balance of any sentence imposed by the courts of this State shall be served concurrently with a sentence or sentences in another state or federal institution and may effect a transfer of custody of such individual to the other jurisdiction for such purpose. In the event the individual's sentence liability in the other jurisdiction terminates prior to the expiration of the individual's North Carolina sentence, the individual shall be either paroled (if eligible) or returned to the prison department of this State, in the discretion of the Post-Release Supervision and Parole Commission.
N.C. Gen. Stat. § 148-65.9