Stuttgart followed Mainz out of the DFB-Pokal in the first round, succumbing 2-0 to Bochum, while Marco Reus returned in a victory for Borussia Dortmund.
Bundesliga champions Bayern Munich will launch the defence of their title against Wolfsburg in the 2014/15 season.
Cologne midfielder Sascha Riether is at the centre of a tug-of-war between a Premier League club and a Primera Liga team.
Hannover have loaned Austria international Daniel Royer to newly-relegated Cologne for next season.
Bayern Munich have bolstered their attacking options for next season with the signing of teenage winger Mitchell Weiser from relegated Cologne.
Lukas Podolski cannot wait to link up with Arsenal next term and insists he can play anywhere.