Vodafone Idea Limited (NSEI:IDEA) in advanced negotiations with private equity companies to monetise its fibre assets and In-Building Solution (IBS) to raise INR 100,000 million to INR 120,000 million, people familiar with the matter said. "The company is in advanced stage talks with a few PE players as it plans to sell the fibre assets and then lease back the infrastructure on a long-term basis," one of the people told ET.