The technical staff of Bayern Munich have reportedly criticised Thomas Muller for his lack of effort on the training pitch, with the Germany international being accused of working harder for the national side than for the Bavarians, Sport Bild reports.
The 22-year-old had developed into an important first-team member at Bayern in the past few seasons, but he was left out of the match squad for FCB's 3-1 Champions League Group A win over Villarreal back in November 2011.
It was initially thought that the versatile attacker was rested for the encounter, but it has now surfaced that Muller was dropped following a lack of effort in training.
Muller is believed to be unhappy with his situation at Bayern this season, as he has been shuffled from position to position rather than be used in his favourite position of central attacking midfielder.
Head coach Jupp Heynckes has often opted to Toni Kroos in the No.10 position, with Muller pushed out to the right or left wing.