keita-pepe
In the friendly between Real Madrid and AS Roma, Pepe and Seydou Keita almost came to blows after Keita refused to shake Pepe’s hand and then the Portuguese allegedly spat at the Malian player forcing the latter to throw a water bottle at him.

If the following video is proof, it is not “alleged” anymore. Pepe did spit in Keita’s direction which resulted in both sides of the players getting into a heated melee. Watch at the 1 minute 47 second mark.