Throughout a week that has seen transfer speculation aplenty around Germany's top clubs, we've witnessed Borussia Dortmund, in particular, dive deep in to the transfer market and sign two premier players as they begin their fight for Bundesliga success.
First to arrive was Gabonese forward Pierre-Emerick Aubameyang from Saint Etienne last week in a move that surprised much of the sport in it's deployment and imagination. Then, in a less unexpected manner, Henrikh Mkhitaryan of Shakhtar Donetsk fame was announced in a deal set to have surpassed £20 million.
Yet, despite both players joining fellow signing Sokratis from Werder Bremen as three astute purchases in Jurgen Klopp's quest to catch league rivals Bayern Munich, one could argue that this still isn't enough. With further investment in the squad needed if the club have any ambition of winning more silverware in the coming season.
Click "Begin Slideshow" to see who we deem as the next best buys for Borussia Dortmund as they add to the reinforcements they've already signed.