Arsenal boss Arsene Wenger and ref Massimo Busacca were at loggerheads during halftime in defeat at Barcelona, it has been revealed.
The Sun says Wenger twice confronted the official and shouted that the decision to dismiss Robin van Persie with a second yellow card was 'a f*****g disgrace'."
Yet Busacca also stunned onlookers in the tunnel by using filthy language back at Wenger while finger-jabbing towards the French manager's face.
Wenger and Samir Nasri have been charged with improper conduct.
