His representative Gerd vom Bruch insists such talk is wide of the mark.
"It is pure speculation," Vom Bruch told the Rheinische Post, although he did confirm the 21-year-old was a man in demand.
"There are two or three really good teams that are interested in Marc.
"And there is also Borussia. We are going to talk about a contract extension with Gladbach."
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