Could you elaborate on Article 5, section 5.8 in order to understand the safeguards afforded to the Contractor and how they would be carried out, which seems to be limited in the language used:
(Without the prior written consent of the Client, the Contractor may not assign any claim against the Client arising from this Contract. …Without the prior written consent of the Client, the Contractor may not unilaterally set off any claim arising from the subject matter of the contractual relationship which the Contractor has against the Client.)
The Client wishes to avoid that any claims of the Contractor from the Contract are assigned to a third party or set off without an agreement with the Client. This is a standard clause required to be present in all contracts entered into by the Client.