Suggestions from the press had made it seem that he was likely tomove on when the season concluded.
But the German, who has not played as much as he would like, played down that speculation.
He indicated his commitment to Palace and boss Roy Hodgson.
"It's in the German media, and I'm not interested in that," he told Sport 1 about his future.
"Everything changes in football every day, but I'm totally solid in the club, and I'm also well received by the fans and the team.
"Of course, I haven't played every game, but I'm an important part of the club. If that were not the case, those responsible would have said long ago that I should go.
"That is the typical German way of thinking that the club is considered inconspicuous.
"If the journalists worked here for a year and a half and saw the quality in the team and in the league, they would think differently.
"Since I have been there, I have played around 50 games in the best league in the world, which is not a matter of course. And I have developed further."