Middlesbrough head coach Aitor Karanka has encouraged his players to vent their frustration behind closed doors after Victor Valdes and Adam Clayton clashed on the pitch.
The goalkeeper and the midfielder had to be separated by central defender Ben Gibson after a frank exchange of views during the first half of last Saturday's 2-1 Premier League defeat by Tottenham at the Riverside Stadium.
While not condoning the spectacle of team-mates snarling at each other in public, Karanka was not unhappy to see two of his leaders demonstrating their passion, and that is something he wants more of.