The 2016–17 Borussia Dortmund season marked the club's 106th overall season and their 41st consecutive campaign in the top-flight Bundesliga. Competing at their iconic Westfalenstadion (home to 81,360 fans for league matches), the team participated in the Bundesliga, DFB-Pokal, and the UEFA Champions League simultaneously. This season was notably the first since 2006–07 without defender Mats Hummels, who transferred to rivals Bayern Munich (though he would later return for the 2019–20 season). In the transfer market, Dortmund orchestrated significant business, spending €119.85 million on new arrivals while earning €123 million from sales, resulting in a remarkably modest net expenditure of just €3.15 million. On the continental stage, the team advanced to the quarter-finals of the UEFA Champions League, while their competitive matches stretched until 27 May 2017 within the season period running from 1 July 2016 to 30 June 2017.