Bayern Munich duo Arjen Robben and Franck Ribery were reportedly involved in a half-time bust-up during Tuesday's Champions League semi-final win over Real Madrid.
The pair are thought to have clashed in the dressing room over who was supposed to take a free kick in the opening 45 minutes of the 2-1 win at the Allianz Arena.
Sport Bild claims that a bruise on Robben's cheek was from a punch thrown by Ribery.
"What happens in the dressing room, stays in the dressing room, there's nothing more to say," Bayern spokesman Markus Horwick told reporters.
The German club travel to the Santiago Bernabeu on Wednesday for the second leg of their tie.
