BRUSSELS/MILAN, Nov 8 (Reuters) - EU antitrust regulators are set to give unconditional approval to Italian state lender Cassa Depositi e Prestiti (CDP) and Australian fund Macquarie’s acquisition of broadband network company Open Fiber, sources close to the matter said on Monday. The deal will raise CDP’s Open Fiber stake by 10% to 60% while Macquarie will acquire 40%. (Reporting by Foo Yun Chee in Brussels and Elvira Pollina in Milan Editing by David Goodman )