Shinji Kagawa marked his re-arrival at the Westfalenstadion with a goal and assist and looks a far cry from the player we witnessed in his spell at Manchester United.
The Japense international has the ability to fire Dortmund back in to the Bundesliga title race, having finished in second place last season, 19 points behind Bayern Munich.
There is no doubt he is an exceptionally gifted player with a fantastic touch, the eye for a pass and he can also score goals.
The 25-year-old was influential in his first spell at Dortmund as he scored 29 goals in 71 games, he also assisted 15 goals, as they won back-to-back Bundesliga titles and defeated Bayern Munich 5-2 in the 2012 DFB-Pokal Final.
With Kagawa some way off his peak fitness there is a worry he may miss tonight's Champions League clash against Arsenal, but with the more games he plays in the familiar 4-2-3-1 of Dortmund the more we will begin to see the re-emergence of a player, who is more than capable of becoming one of the world's best creative midfielders.
Dortmund are in somewhat of an injury crisis with Marco Reus, Jakub Blaszczykowski, Matts Hummels and Ilkay Gundogan all out injured. The latter two are making their return to training and with an away trip to the Allianz Arena on November 1st they can really show Bayern they mean business this season.
Klopp is happy
Klopp was unable to hide his delight as the two were pictured together hugging and smiling on his arrival at the Dortmund training ground.
After his influential performance in their 3-1 win over Freiburg - assisting and scoring a goal - Klopp heaped praise on Dortmund's "lost son" saying he was the "influential figure".
The German also admitted that the way he was mis-used at Manchester United had him in tears and now he has his man back there is no reason why Kagawa cannot become the player that Sir Alex envisioned he would be.
Kagawa only showed glimpses of his brilliance at Old Trafford - scoring a hat-trick against Norwich. During his time under the stewardship of Moyes, Kagawa was often deployed out on the left and was forced to work around either Wayne Rooney or Juan Mata who were preferred in the middle, as United suffered their worst finish in the Premier League.
But now he will be able to shine. Henrikh Mkhitaryan occupied the number 10 position for the German outfit last year, but Klopp will have no trouble asking him to play around the new number seven, a partnership that worked to good effect in the win over Freiburg.
With his last game in the famous red coming in the 4-0 drubbing at the hands of MK Dons - coming off injured after 20 minutes - questions will be asked of how Sir Alex Ferguson and David Moyes were unable to get the best out of a player who was influential in Dortmund's most successful period.
At the start of this season new Old Trafford boss Louis van Gaal declared his dismay at the amount of no.10's in his squad and decided to sanction a return to Germany for the Japanese star.
Black and yellow family
Speaking to the Guardian after his second coming in the 3-1 victory, Kagawa said: “I wanted to fulfil a dream in the Premier League but now I am simply pleased to be back at Dortmund again, with this great team, these incredible surroundings and the unique fans. BVB is like a family and I am proud that they have not forgotten me and that I once again belong to this family.”
T-shirt sales reached over 10,000 in the week after his return and the yellow wall were in full voice to welcome back as chants of "Shinji, Shinji" echoed around the 80,000 fans dressed in black and yellow.
So it seems everyone is happy. United are happy with their new signings, Klopp is delighted, as is Kagawa and the Dortmund fans. It really is a match made in heaven for everyone in Germany and it is possible that Kagawa can single handedly take this Dortmund side back to heights they accomplished between 2010 and 2012.