Bayern Munich pair Jerome Boateng and Leon Goretzka have clashed in training.
BILD reports on Wednesday the pair were engaged in a furious bust-up.
World Cup winner Boateng became incensed after Goretzka mistimed a challenge during a small-sided game, which led to Boateng swinging out at his team-mate.
Goretzka was originally angry after arguing with Thomas Muller over a penalty decision - with the former dismissively gesturing back to the veteran.
The pair later sought to play down their bust-up on social media but the incident is unlikely to be forgotten.
There was a brawl in training today: Goretzka went into a challenge & fouled Boateng without the ball. The latter reacted and hit Goretzka with his hand to the face.
Robert Lewandowski was first to jump in and pull Boateng away. Flick then intervened and talked to Boateng [Bild] pic.twitter.com/KTvgVoadmz— Bayern & Germany (@iMiaSanMia) January 29, 2020
