Bayern's Karl-Heinz Rummenigge has welcomes rivals Borussia Dortmund signing Shinji Kagwa.
Manchester United sold Shinji Kagawa to Borussia Dortmund during the final stages of the transfer window, after two disappointing seasons for the Japanese international.
Manager Louis van Gaal made a brief attempt in pre-season to play him as a central midfielder, with the club overloaded with attacking talent, only to later state he was not happy with his performance.
Few would bet against Kagawa flourishing at his former club Dortmund, where he helped them win two Bundesliga titles, with his form leading to a £16 million move to Manchester United.
United eventually sold him for just over a quarter of that price, and Kagawa has been given a surprise welcome back to Germany.
Bayern ran away with the league last year, having it pretty much sewn up by time the New Year came around.
A stronger Dortmund is vital to the Bundesliga, with managers across the league stung by pre-season criticism from Jose Mourinho that it is a one-horse race, and two at best.
If teams like Wolfsburg, Schalke and Bayer Leverkusen can step up too, the division will be in a far better place.
But when Bayern going out and splash money on Xabi Alonso and Mehdi Benatia when Javi Martinez got injured, indicates they are in the mood to be typically ruthless once again.