Shinji Kagawa
Shinji KagawaReuters

Sebastian Kehl has revealed that Shinji Kagawa is delighted to rejoin Borussia Dortmund after leaving Manchester United earlier during the summer transfer window.

The Japanese international spent two seasons at Signal Iduna Park before making a switch to Old Trafford in 2012. He was signed by the Red Devils' former manager Sir Alex Ferguson and in his debut season, the playmaker went on to win the league title.

However, the previous season saw Kagawa's first team appearances being limited under David Moyes and the arrival of Juan Mata in January saw him drop further down the pecking order.

"You could see that it was a huge relief for Shinji Kagawa [to have left Manchester United for Dortmund]," Kehl said, as quoted by Goal.com.

"It was not an easy situation for him at Manchester in the past few weeks. And then there were some comments from his coach that prompted him to return to Dortmund."

"He gets a lot of faith here. Everything that he's been missing in the past few months, he'll get back here again," the Dortmund midfielder concluded.

Dortmund have suffered a massive blow as their star player Marco Reus picked up an injury while on international duty. He will be out of action for four weeks and the midfielder's absence could see Kagawa play in his natural position behind the striker.

However, the German international's return should not create any issues for the Japanese attacking midfielder. Earlier this month, Dortmund chief Hans-Joachim Watzke said that both the German international and the former United man can play alongside each other.

"Marco sees what is emerging here, I'm sure. Marco and Shinji can perfectly play together. We have now in the middle of a great offer a great mix of dynamic, ball security and experience," Watzke told Sports Bild.

"The crowd, all speak of now, I've honestly experienced only virtually. We need to get there that we can continuously replace an adequately to two top players in a game."