The 24-year-old joined Real Madrid CF in 2011 after helping back-to-back champions Dortmund to the 2011 Bundesliga title, and being voted Germany's Player of the Year by his fellow professionals. Despite signing a contract until 2017 with the Spaniards, he spent the first half of the current season at English side Liverpool FC, where he enjoyed only limited playing time.
"It's overwhelming to be back home," said Sahin. "This is my club, my home." 562 days after leaving the club he joined at the age of twelve, the midfielder expressed his hope of "helping the team with my quality."
Sahin is the youngest player to have appeared in the Bundesliga, making his league debut for the Yellow-Blacks on 6 August 2005 at the age of 16 and 335 days. The Germany-born 37-time Turkey international was a key figure in Dortmund's league-winning 2011 campaign, in which he scored six goals and set up a further eight.
No 18 shirt
"This is the club where I can bring 200 per cent," said Sahin, who has 13 goals and 28 assists in 135 Bundesliga games on his account for Dortmund, where he will be wearing the No 18 shirt.
"I'm really glad to welcome Nuri back home," pitched in Dortmund's sporting director Michael Zorc at a press conference on Friday. "His quality and character suit the club perfectly, which is why I believe this deal will be beneficial for both sides."
Sahin's arrival was not the only good news for Dortmund fans on Friday. The Westphalians also announced the extension of Germany international defender Marcel Schmelzer's contract until 2017. “Marcel is an important part of what remains a young side,” said Zorc.