Schalke midfielder Kevin-Prince Boateng lost his cool against teammate Kryakos Papadopoulos following a nasty challenge on Jefferson Farfan at training, GHANAsoccernet.com can exclusively reveal.

The 25-year-old was unhappy with the tackle of the Greek international on fellow teammate Farfan, leaving him injured on the ground.

The Ghanaian international, who is seen as a leader at the club, confronted Papadopoulos in an angry manner which forced the other teammates to step in from escalating.

The former AC Milan man did not understand why Papadopoulos was so hard on his colleague in training.

GHANAsoccernet.com can reveal that the manager Jens Keller was forced to stop the exercise by calling the two players to remain calm.