Participation in tendering procedures shall be open on equal terms to all persons coming within the scope of the Treaties and to any other natural or legal person in accordance with the specific provisions in the basic instruments governing the cooperation sector concerned.

In the cases referred to in Article 54(2), it may be decided, under exceptional circumstances duly justified by the authorising officer responsible, to allow third-country nationals other than those referred to in paragraph 1 to tender for contracts.

Where an agreement on widening the market for procurement of goods or services to which the Union is party applies, the contracts for procurement financed by the budget shall also be open to third-country nationals other than those referred to in paragraphs 1 and 2, under the conditions laid down in that agreement.

The Commission shall be empowered to adopt delegated acts in accordance with Article 210 concerning detailed rules on the participation in tendering procedures.