Van der Vaart has been a hit at White Hart Lane since joining Spurs from Real Madrid over the summer.
“My decision to move here was the best thing to do,” Van der Vaart told Kicker-Sportmagazin.
“I do not regret moving over here. We are doing well in the league and Spurs are a top side in the Premiership.
“It is, however, a fact that I want to play for Hamburg again. I have been told that I will always be welcome back there.
“I think I will rejoin the club in the future. Last summer I was not handed the opportunity because the financial circumstances were not right at that point, but maybe in the future they will be.”
