Bayern Munich and Germany captain Philipp Lahm is to be warned by the German Football Association (DFB) about his future conduct after causing irritation with his soon-to-be-published biography.
Excerpts from the book have been published in the Bild newspaper over recent days and his criticism of former Germany coaches Rudi Voller and Jurgen Klinsmann have not gone down well.
The DFB will discuss the issue with Lahm ahead of next week's international matches against Austria and Poland and warn the full-back that he has overstepped the mark.
A decision on whether he will remain captain of the national team should also be taken in the meeting between Lahm, Germany coach Joachim Low, national team general manager Oliver Bierhoff, DFB general secretary Wolfgang Niersbach and DFB president Dr Theo Zwanziger.
"Our national team players must be aware of their particular responsibility in public," Zwanziger said in a press release. "That includes respecting other footballing personalities with whom they may not have shared or may not share an opinion.
"For me, Philipp has made a mistake by misjudging the impact and possible interpretations of the pre-publication of his book."
Low also believes there is a need to sit down with Lahm and discuss his conduct.
"There are some passages in the book which I don't like," he said. "Here is a player who is publicly judging some coaches with whom he has worked for a long and successful period of time. We are going to have to talk about this in the coming weeks."
Furthermore, the DFB has condemned Lahm's criticism of Voller and Klinsmann.
"Rudi helped us after the 2000 World Cup in an extremely critical situation and, despite many problems, he did an amazing job which you still have to take your hat off to today," Niersbach said. "Therefore, Philipp Lahm's remarks are completely uncalled for and unacceptable.
"Jurgen created a spirit of optimism when he took over in 2004 which culminated in the remarkable 2006 World Cup. As national team players and world champions, but also in their overall service to German football, Rudi Voller and Jurgen Klinsmann cannot be esteemed highly enough. Philipp should know this.''