Japan's is offering to purchase shares of Uber Technologies at a valuation of $48 billion, a 30 percent discount to its most recent valuation of $68.5 billion, a person familiar with the matter said on Monday.

The investment, which has been approved by the Uber board, would give the Japanese investor up to 17 percent of the ride services company. The offer comes as Uber is trying to improve corporate governance and cut the influence of former Chief Executive Travis Kalanick.