出让人

Normally, obligor can restitute only from the assignor if the creditor's right assigned doesn't exist or obligor revokes the contract.

与债权不存在或者债务人解除合同时,债务人通够向债权出人请求返还。

In case both parties agree to let the alienator continuously possess the chattel when the real right of a chattel is alienated, the real right shall go into effect upon the effectiveness of the agreement.

动权转时，双方又约定由出人继续占有该动，权自该约定生效时发生效力。