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.

Chievo boss Stefano Pioli is fearing an Inter backlash when the two teams meet this weekend.

The Nerazzurri are feeling the pressure after last Sunday's 1-0 defeat to derby rivals Milan left them six points off the top in what is their worst start to a season post-Calciopoli.

"A few people might think that this is the best time to face Inter, but I disagree," the tactician noted.

"We'll play a wounded Inter on Sunday, an angry side which will be desperate to hit back after a derby loss and some not exceptional games.

Sunday's match between Sampdoria and Chievo will be without stars like Angelo Palombo, Franco Semioli and Sergio Pellissier.

The Blucerchiati have not even got captain Palombo on the bench, joining Luciano Zauri and Semioli on the treatment table.

Antonio Cassano is naturally absent, as Samp have started proceedings to have his contract terminated for 'insubordination.'

Chievo are also forced to do without their captain, as striker Pellissier is still struggling with an injury.

Stefano Sorrentino has pledged his future to Chievo amid speculation that he might leave the club in the January transfer window.

The 31-year-old was said to have been unsettled after not getting a big move in the summer following an excellent season in Verona.

Juventus were among the clubs interested in signing him, but opted for Marco Storari when Chievo refused to lower their asking price.

Speaking to Tutto Mercato Web, Sorrentino said: "I stayed at Chievo and now I am only thinking about doing well with this shirt.