With the loan signing of Arsenal's Ethan Nwaneri, Borussia Dortmund are responding to the Konstantelias shock. The 19-year-old left-footer most recently endured a difficult six months in Marseille. What can Nwaneri give BVB?
The completion of big-money deals became a near-daily occurrence between June and September, but which of the continent's most powerful clubs spent most wisely?
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