Ever since he left the Signal Iduna Park in the summer of 2011, Nuri Sahin has struggled to find form and been a shadow of his Dortmund self. While at Dortmund, he forged a dangerous central midfield partnership with the more defense-minded Sven Bender. His move to Real Madrid always seemed a money-minded one, given the plethora of quality players already available in the position he occupies.

Some saw the move to Madrid as a learning experience for Sahin, especially because the great Xabi Alonso would be around to mould him into a deep lying genius. Injuries marred Sahinai??i??s stay at Madrid and he was eventually loaned out to Liverpool on a season-long deal this summer. At Anfield too, Sahin wasnai??i??t able to rediscover his touch and continued to rot under the Brendan Rodgers regime.

With all this frustration growing beyond an acceptable level, Sahin recently signed with Dortmund hoping to get his career back on track. For all Sahin lovers, his return to his beloved Dortmund comes as wonderful news. Dortmundai??i??s decision to take back Sahin is the icing on the cake in this magical reunion. Sahinai??i??s brilliance is no secret to JA?rgen Klopp but his football has only gone downhill for almost two years. And with Dortmund doing so well this season, where does Sahin fit into the system?

The position that Sahin would ideally occupy is currently filled by the man who a lot of people see as Sahin 2.0, Ai??lkay GA?ndoAYan. An automatic starting berth in the currently used 4-2-3-1 is out of the question and Sahin will have to build his reputation once again, this time with bursts off the bench. Moritz Leitner is the other competitor for this creative central midfield position but the diminutive German is still a notch below both GA?ndoAYan and Sahin.

There isnai??i??t the slightest doubt about Sahin restarting his Dortmund career as a regular substitute rather than the midfield maestro from a few years ago. But this is a man of immense talent and it is only a matter of time before he stars to put in performances that merit a starting spot. What must Klopp do then in order to keep peace and harmony within his well oiled machine?

The first option that Klopp has is to rotate very smartly between GA?ndoAYan and Sahin. With the former showing early signs of difficulty because of a lack of options in his position, Sahin will be perfect cover for GA?ndoAYan. Dortmund are still battling for laurels on three fronts and as one can see from Bayern Munich, quality cover at each and every position is a must in order to achieve great success. But this isnai??i??t the best of situations for young Leitner. After all that GA?ndoAYan and Sahin have achieved, Leitner is surely furthest down the pecking order. His playing time is going to be greatly reduced by Sahinai??i??s arrival and this points in favor of the stagnation of his career. Right now the best option for Dortmund is to hang on to Leitner till the coming summer, mainly as a backup player, and to offload him after the season.

The big question on everybodyai??i??s mind is what happens to the side if Sahin returns to the form that he displayed in the 2010-11 season and GA?ndoAYan continues to play the way he is playing right now. One very likely option is that Klopp will completely change things and shift to a 4-3-3. The back four will remain unchanged from now, but the three man midfield will now be able to house both GA?ndoAYan and Sahin. Alongside the creative duo will be either Bender or Kehl. The front three will consist of Marco Reus and Mario GAi??tze on the flanks, and Robert Lewandowski as the center forward.

While Shinji Kagawa was at the club, the central attacking midfield position was hugely influential in Dortmundai??i??s attacks. But with his departure and the arrival of Marco Reus, things look a lot more skewed on the field. The central position among the attacking three isnai??i??t strictly occupied in the manner that it was when Kagawa was around.

So the removal of a player from that position and the inclusion of another midfielder seems plausible. The addition of this third deep midfielder adds a lot more defensive cover to Dortmund but might force Klopp to shift from their current counter attacking mindset to a system where they attempt to keep the ball a lot more in midfield. This 4-3-3 will by no means eliminate those wonderful fast paced breaks from the Dortmund game but they will be launched from deeper position. Also, the duo of GA?ndoAYan and Sahin will have to maintain possession and push forward more often than they ever did with Dortmund.

What the 4-3-3 does for Dortmund is that it begins to nullify the usage of defensive midfielders adopted by many other in order to shut down that attacking midfielder. The presence of two deep lying playmakers is almost unheard of, and the presence of attacking sensations like Reus and GAi??tze will only make this system a lot more potent. The likes of Kuba and Grosskreutz will play off the bench but with Dortmund playing at such a high tempo and beginning to look like a threat at all levels, they will play hugely important roles for the club.

A shift to the 4-3-3 also allows Leitner to stay at the club, making him cover for GA?ndoAYan and Sahin. Fringe player Marvin Bakalorz can also be brought into the main side as the third cover player for the three man midfield, Kehl being the second.

The arrival of Sahin has opened up a whole new avenue for Klopp and Dortmund. Looking at the resources that the club has, an eventual shift to the 4-3-3 seems the best way to go for Klopp in the near future. This love story looks like one with a happy ending.

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