Freiburg manager Christian Streich insists midfielder Matthias Ginter is not for sale.
Borussia Dortmund, Arsenal, Manchester United and Liverpool are all reported to be on his trail.
Streich told Sport1: "There is no doubt he will be staying on.
"Matthias (Ginter) has a contract with our club. A long-term one. In addition, he is also of the same opinion.
"He is having the good sense to agree to this. We are definitely not letting anyone else make our very own decisions."