The 21 year old told Danish newspaper BT: "There were not that many clubs to choose from in the end and no-one were closer than Tottenham.
"There were a lot of rumours, but I only felt right about the approach from Tottenham. The club followed me for a long time and really showed intent.
"It was the whole package that attracted me. I spoke briefly with the manager and my impression is that he is a very good manager. The goal is to challenge for the title. That is what the club wants and that is what I want."