Foxconn has lined up several high-profile US technology firms to join its bid for Toshiba's memory chip unit.
Foxconn, the world's biggest contract electronics manufacturer, makes the iPhone for Apple.
Mr Gou said Amazon could also come on board, while talks continued with Google owner Alphabet, Microsoft and Cisco Systems.
Apple declined to comment, while others did not respond to requests for comment.
It was not clear say how much Foxconn planned to offer for the division, which analysts have valued at about $18bn (£14.2bn).
Earlier this year it was reported that Foxconn could offer as much as $27bn for the unit. It was not clear why the potential bid was so much higher than its mooted value.
Toshiba is selling some or all of its chip unit to cover huge losses in its nuclear division, Westinghouse Electric, which has filed for bankruptcy.
It was the latest headache for the Japanese conglomerate. In 2015, Toshiba's chief executive resigned after the firm said it had overstated profits for years. It is also set to post another annual loss.