Former Italy coach Arrigo Sacchi says Inter Milan striker Mario Balotelli still has a long way to go to be a top player.

The Inter youngster has been tipped for a Nazionale call to the 2010 World Cup but his behavioral problems may slow his growth.

"Balotelli is a talent but he is not mature yet," said Sacchi.

"He needs to start playing for the team. If he will prove to be experienced enough or Marcello Lippi is convinced he can help him then he should play for the Azzurri."