There is not too much to elaborate on. I think he lacks technical ability and passing ability. He could develop, of course, but at 20 I think he is unlikely to become much better in that department. He did well defensively today, but he misplaced some simple passes and looked uncomfortable on the ball. A potential center back partnership of Tanganga and Sanchez would just not be technically good enough for me if we want to build from the back. What is not often talked about with Alderweireld and Vertonghen, but has been very important for us in recent years, is that they can play from the back and start our attacks with a bit of quality.