The 22-year-old has been linked with the likes of Hoffenheim and Blackburn Rovers.
“I’ve have had some concrete enquiries regarding a transfer,” he told BILD.
“One was from Hoffenheim, but I’m not even thinking about moving on just now.
“I’m actually aware that Energie are trying to work out a new and improved deal and I’ll be considering it. These discussions are at an advanced stage.
“I could be move abroad of course, but it would be a great thing to play for a top-flight team first. Why shouldn’t we manage to gain promotion with Energie to the Bundesliga?”
