Borussia Dortmund CEO Hans-Joachim Watzke has revealed that midfielder Shinji Kagawa would be welcome back at the club.
Kagawa moved to Manchester United in 2012, but the Japanese international endured a mixed season at Old Trafford.
That has lead to speculation that the 24-year-old could return to Germany, and while Watzke would like Kagawa back, he has insisted that it does not look likely during this transfer window.
Watzke told Bild: "The door's always open for Shinji. A transfer is not an issue at the moment, though."
Kagawa made just 26 appearances during his debut season for the Premier League champions.