China’s Tsinghua Holdings is still discussing a potential deal to buy U.S. chipmaker Micron Technology Inc (MU.O) and hopes it could eventually go through, the state-backed investment company’s chairman told Reuters on Thursday. Sources told Reuters earlier this week that Micron has dismissed an informal $23 billion offer from Tsinghua Unigroup, a private equity subsidiary of Tsinghua Holdings, on the presumption that a deal would be blocked by U.S. regulators. Xu Jinghong, chairman of Tsinghua Holdings, said he remained hopeful, although his firm has not held any discussions with U.S.