Thing is - Sahin was absolute dross in the PL. Some players excel in great sides and in a certain system. This lad looks a good player in the games I've seen him in but I dont see how anyone can call him one of the best in the world yet, and to command the sort of fee people are talking about.
So Sahin was a complete failure for Liverpool, right? Good to know that you can judge a player after ten fecking games, whom three games he was played completey out of position and two as CM which were class (vs. Norwich and West Brom). So that leaves us with five poor games in a new league and system after not having played professional football in competitions for six months. Thank you very much.
This is not just directed at you, but everyone who likes to use Sahin as prime example for a player, who only works in one team. I would have no problem agreeing with them if Sahin would have actually gotten the time and chances to adapt. He played a grand total of 127 minutes for Real Madrid in the Primera Division. His year there was defined by injuries (missing most of the pre season and the whole start of the season) and lacking trust by Mourinho. Rodgers had the brilliant idea to shove Sahin in the attacking midfield, when he slowly got his foot on the ground in England. When that didn´t work (what a surprise!) he simply let him fall like a hot potato.
Then he came back to Dortmund and slowly got back into form. At this point in the season, he is one of their best players so far and able to replace the currently injured Gündogan. Must be the system right? While it is true that certain core ideas are the same, there are several strategic differences between the team 2010/2011 and 2013/2014, a lot of them actually because Sahin departed in the first place. But the players are the same, right? Players like Götze, Kagawa, Barrios... oh wait, they are not there anymore. But at least Kuba, Lewandowski and Großkreutz are still there. Well, the first two were actually reserve players for the most part and a far cry from the players they are now back then and the last one plays a different position now, but they are still there. Reus, Aubameyang, Hofmann, Mkhitaryan? All came after the originally left.
What I believe is the main reason, why Sahin plays on a different level at Dortmund than elsewhere? Trust by the coach. This is the biggest difference between Klopp and the other two in this topic.