Borussia Dortmund manager Thomas Tuchel fears losing Ilkay Gundogan.
The midfielder lynchpin has been linked with high-profile moves to Barcelona, Manchester United and Real Madrid in previous transfer windows.
“The importance of Ilkay is undisputed – I would like to tell you that he has extended until 2026, unfortunately that is not the case," Tuchel said.
“But we are in talks. We have a good chance. The interest in Gundogan is great, which is why talks are not very easy."