6. In cases where paragraph 4 applies except that the requested State is under an existing international obligation to extradite the person to the requesting State not Party to this Statute, the requested State shall determine whether to surrender the person to the Court or extradite the person to the requesting State. In making its decision, the requested State shall consider all the relevant factors, including but not limited to:
(c) The possibility of subsequent surrender between the Court and the requesting State.