Bostjan Cesar says “Samuel Eto'o did not even apologise” after head-butting him in the chest in scenes reminiscent of the 2006 World Cup Final.
During the first half of Inter's 2-1 defeat at Chievo, Eto'o got into a row with the defender, claiming he had been hit on the face by a trailing arm.
The Cameroon striker then reacted a few moments later by head-butting Cesar in the chest, unseen by the officials.
“Eto'o is a great player, but I think this sort of behaviour simply should not happen,” said the defender.
“He head-butted me and did not even apologise. I can't be too unhappy, though, as the important thing is that Chievo got the three points.
“It was a very important victory for us and our campaign, so we must continue along this path.”
It is very likely that Eto'o will receive a lengthy ban for the off-the-ball incident, which was caught on camera.
The head-butt was reminiscent of the infamous Zinedine Zidane attack on Marco Materazzi in the 2006 World Cup Final.
Think you know your Italian football? Share your knowledge, tips and comments to win cash prizes in OLBG's tipster competition - £5,000 monthly.