Borussia Dortmund midfielder Mario Gotze has revealed that he would like to leave the Bundesliga at some point in his career.
However, the Germany international insists that he is "happy" at the defending German champions for the moment.
"I'd like to leave my options open," he told Sport1. "Clubs like Real Madrid, Barcelona or Manchester United are attractive.
"In other leagues, you could develop further - but I'm not thinking that far ahead right now. I am happy at Dortmund and delighted about the way things are going. I would not have extended my contract [until 2016] otherwise."
Dortmund are currently 20 points behind leaders Bayern Munich in second place in the Bundesliga.
