TOKYO, Feb 27 (Reuters) - Japan's leading share index is expected to open higher on Monday, extending this month's gains of nearly 10 percent, with exporting stocks likely to attract interest after the yen fell to a nine-month low against the dollar. Strategists expects the Nikkei to trade between 9,650 and 9,800, up from Friday's seven-month closing high. Nikkei futures in Chicago closed at 9,705 on Friday, up 65 points or 0.7 percent from the Osaka close of 9,640. "I don't think G20