bundesliga.com takes a closer look at a selection of the most notable faces to have joined the league of the world champions shortly before the window slammed shut...
With Javier Martinez and Bastian Schweinsteiger on the sidelines, FC Bayern München responded to their purported hole by bringing in decorated midfield synergist Xabi Alonso. A 2010 World Cup and Euro 2008 and 2012 champion with Spain, the 32-year-old proved his international pedigree on his debut at Schalke, enjoying more touches than any other player whilst spraying the ball around the park with trademark precision. Needless to say, the Bayern hierarchy will be hoping the midfielder's experience in the UEFA Champions League - a competition he won in 2005 with Liverpool FC and last season at Real Madrid CF - has the desired effect.
Borussia Dortmund had already signed Ciro Immobile, Adrian Ramos and Matthias Ginter before turning to old favourite Shinji Kagawa on 31 August. The 25-year-old played for BVB for two seasons between 2010 and 2012, with his 21 goals and 14 assists in 49 top-flight appearances helping the Ruhr district club lift back-to-back league titles in 2010/11 and 2011/12. The Japanese international was sorely missed during a two-year spell in the Premier League with Manchester United FC, but now he's back the mere thought of seeing the unmistakable playmaker line up alongside Marco Reus and Henrikh Mkhitaryan is a tantalising prospect indeed.
In a bid to stem the tide at Bundesliga ever-presents Hamburger SV, club CEO Dietmar Beiersdorfer made waves on deadline day with the season-long loan acquisitions of Bayern's Julian Green and Tottenham Hotspur FC midfielder Lewis Holtby (pictured), who arrives at the Imtech Arena with 16 goals and 24 assists to his name in 99 Bundesliga appearances for former clubs VfL Bochum, 1. FSV Mainz 05 and FC Schalke 04. Nineteen-year-old Green, for his part, is still a relative novice of the German top flight, but has played in the Champions League for his parent club as well as the 2014 World Cup for the USA, scoring in the last-16 defeat to Belgium.
Mainz head coach Kasper Hjulmand cast the net far and wide in a bid to kick-start the party at the Coface Arena, with Hertha Berlin loanee striker Sami Allagui (pictured) - scorer of 14 goals for the Karnevalsverein between 2010 and 2012 - and Argentinian forward Pablo De Blasis - who contributed to Mainz's downfall in UEFA Europa League qualifying back in July - both familiar faces at the Rhineland-Palatinate club. Midfielder Jonas Hofmann (Dortmund) and defender Philipp Wollscheid (Bayer 04 Leverkusen) bring plenty of domestic and European experience to the table, much like 21-year-old wide man Jairo Samperio Bustara (Sevilla FC).
Allagui's return to his former abode coincided with a big-name arrival in Berlin, where Ivorian journeyman Salomon Kalou touched down last weekend to put pen to paper on a three-year deal from French outfit LOSC Lille. The 29-year-old won four FA Cups, the Premier League and the Champions League during a six-year stint in the Premier League with Chelsea FC, having shot to fame in the Eredivisie with Dutch giants Feyenoord. The 67-time international struck 29 times at his most recent outpost in Ligue 1, displaying a cutting edge in front of goal not too dissimilar to that of departed 16-goal frontman Ramos - the club's leading Bundesliga marksman last term.