The Netherlands coach says he was contacted by Spurs in late 2013 and acknowledges that managing in the Premier League interests him.
"Everybody knows it so I can admit it," Van Gaal told Sky Sports News. "I don't do things in a double function [holding two jobs at the same time]. You have to give an example to your players that they have to focus on the national team and that is my ambition also.
"I have refused [the Tottenham job] but maybe there will come another chance. That is the difficulty with coaching. When you are free, then maybe there are no vacancies."
Van Gaal, though, acknowledges that working in the Premier League interests him — but not until after the World Cup.
"When you are working, then there are vacancies. It is always difficult. After the World Cup I shall retire or, if there is a Premier League club, I shall think about it," he said. "I want to work in the Premier League because that is the league I have not worked in yet. I want to coach here in the Premier League because I think Spain, Germany and England are the strongest competitions. That is an ambition."