Mueller set up two goals for Germany in their 6-0 rout of Norway last Monday in a World Cup qualifier, but produced another poor display on the wing for Bayern in Saturday's 2-0 league defeat at Hoffenheim.
Ancelotti oversaw a continuation of Bayern's domestic dominance in 2016/17, capturing a fifth straight Bundesliga title for the club in his first season at the helm after replacing Pep Guardiola.
Goals from Robert Lewandowski, Thiago Alcantara and Joshua Kimmich helped Bayern Munich beat 10-men Anderlecht 3-0 at the opener of the UEFA Champions League group stage here. The Italian's inability to get the best out of him leaves the club in an awkward position. Mark Uth was the hero for the Village Team with a double against Bayern.
"Apparently, Robert was irritated by the Paris transfers", Rummenigge told German daily Bild.
"Bayern will have to come up with something if they want to keep bringing world-class players to Munich", said Lewandowski, who joined on a free transfer from Borussia Dortmund in 2014.
"If you publicly criticize the coach, the club or the other players, you will get stress from me personally".
Bayern seized the initiative after just 12 minutes when Anderlecht shot themselves in the foot. After PSG signed Neymar for a record €222 million euros in the summer, Lewandowski believes Bayern can still win European club football's biggest prize because money isn't everything. I don't understand the section and I will have to ask him.
Bayern's executive vice-chairman, Jan-Christian Dreesen, later confirmed this, though he also insisted the offer was never seriously considered by the club.
Despite continuing to press during five minutes of added time, Bayern could not conjure a dramatic finale as Hoffenheim moved level on points with Borussia Dortmund and Hannover at the top of the table.
"Also, we have to do more talking on the pitch". At the same time, SportBild reported that a new list of fines was to be introduced - with a tardy arrival for training costing €1,000 ($1,197) for every minute that a player is late.