Invitation for expression of interest to act as technical advisor to the Hellenic Republic Asset Development Fund (“HRADF”) for the concession of the right to operate, maintain, and commercially exploit Egnatia Motorway and the three vertical axis, (I) Siatista – Ieropigi/Kristallopigi, (II) Thessaloniki – Serres – Promachonas and (III) Thessaloniki – Evzoni