Munich - After a summer which saw Germany become the toast of world football, Off the Ball - bundesliga.com's lighthearted weekly - returns with a bang.

In this week's edition, we find out which FC Bayern München star could do with a retuning, reveal the German football legend denied a trip to the Big Apple and check out the pre-season escapades of a 1. FC Köln newbie...

There's not much Germany's can't do on a football pitch, but with the mic in hand, it's another story. Revelling in die Nationalmannschaft's fourth FIFA World Cup triumph, the 29-year-old's rendition of a rather inappropriate song about Bundesliga rivals Borussia Dortmund went viral recently - much to the Schwarz-Gelben's chagrin. "If you need any singing lessons, let us know," BVB responded. Schweinsteiger later apologised via his official Facebook page.

It's been a farcical afternoon for FC Bayern executive board chairman Karl-Heinz Rummenigge ahead of the club's Audi Summer Tour of the USA. The 58-year-old, along with six youth players and three crew members of FCB-TV, was unable to board the club's flight to New York owing to technical problems with the US's visa processing system. "It's annoying, but that's life," said sporting director Matthias Sammer. "There's nothing we can do about it now. Hopefully he'll be able to join us soon."

And finally, Köln summer signing wasn't going to pass up an afternoon of team bonding at the club's Austrian summer training base, showing absolutely no fear as he conquered the rugged canyons and picturesque waterfalls of Kitzbühel with the daredevil touch of a seasoned professional. If the Japan international can navigate Bundesliga defences with even half as much precision, the 2013/14 Bundesliga 2 champions will have some player on their hands.