Berlin: Borussia Dortmund’s CEO Hans-Joachim Watzke says he expects star striker Pierre-Emerick Aubameyang to remain with the Bundesliga giants, for now. The Gabon hotshot has hit 28 goals this season, including the hat-trick against Benfica on Wednesday which fired Dortmund into the Champions League’s quarter-finals. He has scored seven goals in three games before Saturday’s league match at Hertha Berlin. The 27-year-old has a contract with Dortmund until 2020, but admitted in January that he is considering leaving in June to take ‘the next step’ in his career. “’Auba’ has a contract until 2020. We know what we have in him, but he also knows what he has with us,” Watzke told German daily Bild.