If an assignment is not permissible, the Purchaser shall instruct the third-party debtor to make payments, if any, solely to the Seller.
若不可转让，则买方有义务指示第三方债务人支付款项，若有应仅支付给卖方。
2
To be specific, as for the general assignment of creditor's rights, the agreement is binding between two parties but invalid to a bona fide thirdparty.
对于一般民事债权让与，该约定对于债权转让有约束力，但不得对抗善意第三方。
3
As for the validity to the thirdparty, it mainly concerns the problem of double assignment and the priority right of the assignee and the other creditors.