Stuttgart sporting director Robin Dutt has claimed that "a big group" of clubs are trying to sign defender Antonio Rudiger, but he will not be letting him go on the cheap.
The 22-year-old, said to be valued at £13m, came through the Bundesliga outfit's youth system, and currently has a contract there until 2017.
Dutt is quoted by German newspaper Bild as saying: "There is a big group of interested parties [after Rudiger], but we have our expectations and we won't lower them."
Injuries limited Rudiger, said to be on the radars of Chelsea and Atletico Madrid, to just 19 games for Stuttgart last season.