Robert Lewandowski and Kingsley Coman were reportedly involved in a training ground fight on Thursday, with Bayern Munich yet to confirm or deny the incident.
The German giants entered the week on a high having trounced rivals Borussia Dortmund 5-0 on Saturday, taking them a point clear at the top of the Bundesliga table with six games remaining.
A match-up against Fortuna Dusseldorf awaits on Sunday as the reigning German champions look to further cement their slim lead in the table.
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However, this alleged incident between team-mates may threaten to disrupt that effort, with head coach Niko Kovac likely to address the situation at his pre-match press conference Friday.