The Germany international has been in fine form this season and was linked with Barcelona among a number of other teams earlier this year, but had earlier told Sport Bild that he was "100 percent sure" he would remain with the club next season.
Although the 22-year-old has stressed he is keen to negotiate a new contract with the "incredible" Bundesliga outfit, he has made it clear that his dream would be to make a switch to England or Spain further into his career.
"My objective is to play in Spain or England," Gundogan told AS. "Without a doubt I am happy here, but I have a plan for my career. I don't know what will happen in the future, but what I do know is I desire to play in one of these two countries. I like the style of Spanish football.
"I have a contract with Dortmund until 2015, and the club wants to renew. At the moment we're negotiating the deal, but there is still nothing clear."
Gundogan has developed into an important first-team member at BVB since joining the club from Nurnberg in the summer of 2011.