Bayern Munich: Robert Lewandowski and Kingsley Coman in heated training ground bust up - Bild

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The attacking duo Robert Lewandowski and Kingsley Coman were allegedly involved in the training ground bust-up ahead of their Bundesliga clash with Mainz on Saturday.

German daily Bild reports that during the training session, the France international was riled up after the superstar striker criticised the 21-year-old before the argument escalated to a physical confrontation.

The report added teammates, Niclas Süle and Jerome Boateng were the first on the scene to try to separate the pair.

But the fight had grown so intense that the two players could not do separate them alone, with practically the whole team needing to intervene in order to break up the pair.

However, it's been alleged that head coach Niko Kovac was able to resume training after the incident.