Germany teammates Joshua Kimmich and Antonio Rdiger have been filmed clashing in training at the World Cup last year.
Germany were bounced out of Qatar at the group stage.
And in a documentary, Bayern Munich midfielder Kimmich and Real Madrid defender Rudiger are filmed clashing in training.
You never say it to my face, you always say it from behind. Do you think I don't play for the team?" Kimmich snapped at Rdiger, half facing him, after he reproached him for an action during training.
Rdiger answered: They tell you things, they give you instructions".
And Kimmich responded: You always tell me 'do what you want' and then you end up telling me the opposite."
The pair butted heads before tempers cooled. Kimmich and Rudiger are again in Germany's squad for this week.