In total, the Bundesliga spent more than €400m on new arrivals over the summer. Here are 5 of the best signings that have hit the ground running in their rookie campaign. ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌