What happened to the artices about him only joining if he had full control over transfers, I guess the wages were too attractive to turn down. Also I dont think he`ll be too succesull at liverpool, I mean that team at Dortmund was probably a once off, young, full of pace, high stamina levels, that team with a few additions of his own complimented his style of play perfectly
With players like Lewandowski, Gundogan, Gotze, Reus, Hummels, Subotic, Kagawa, all extremely good players, I doubt he`ll find a spine that good again at liverpool. But this is all speculation, should be interesting how he does at Liverpool