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Champions League finalists Borussia Dortmund would welcome back Japan midfielder Shinji Kagawa should the Manchester United star wish to return to the Bundesliga.
"The door is always open for Shinji," Dortmund CEO Hans-Joachim Watzke told German daily Bild.
"But at the moment, it's not a subject up for discussion for us."
Kagawa recently stirred the waters by telling Japanese television Foot Brain that, after an unsatisfactory first season at Old Trafford by his standards: "One day I will return to Dortmund, if they agree to it.
"There was too much going through my head, I haven't been happy with my performances," added the 24-year-old, who joined Dortmund in 2010 from J-League side Cerezo Osaka.
"I didn't score as much as I wanted to and I was injured.
"Even though we were Premier League champions, I can't feel that I achieved everything I wanted to. Personally, it wasn't a good season for me."
Kagawa joined United for 16 million euros (US$21m, £14m) after helping Dortmund win the German league and cup double in the 2011-12 season, but his agent Thomas Kroth says a return to Borussia is not imminent.
"As things stand, I am assuming that Shinji will stay at Manchester United, but in football nothing is impossible," he said.
Kagawa made 20 league appearances for United last season, but was used only three times in the Champions League.