Antonio Conte has insisted Italian supporters must “improve” after Romelu Lukaku was subjected to racist chanting on Sunday night in Internazionale’s 2-1 victory over Cagliari.

Lukaku was handed the opportunity to seal the win from the penalty spot with 20 minutes remaining after Stefano Sensi was fouled and he kept his cool despite large sections of the crowd aiming clearly audible monkey chants at the former Manchester United player.