No assignment of any right or obligation under the Contract shall be made by either party to a third party without the previous written consent of the other party.

任何一方未经另一方书面同意，不得将本合同项下的任何权利或义务转让给第三者。

youdao

Assignment: the Service Provider shall not assign or sub-contract any of its rights or obligations under this Agreement without the Client's prior written consent.

作业：服务提供商不得转让或分包合同的任何权利或义务履行本协议项下的无客户的书面同意。

youdao

In California, once the contract is signed, the assignee has 30 days to send out written notice of the assignment to the company's creditors.

ENGADGET: OnLive's alternative to bankruptcy: just what is an Assignment for the Benefit of Creditors?