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The Bundesliga's transfer window: Simons surprise, high-profile departures and even the odd saga
Borussia Dortmund were busy, Bayer Leverkusen moved smartly, Eintracht reinvested and RB Leipzig made the biggest one-off January splash
Borussia Dortmund were busy, Bayer Leverkusen moved smartly, Eintracht reinvested and RB Leipzig made the biggest one-off January splash
