Vieri, 33, agreed a one-year contract with the Genoa-based club in July but threw in the towel without even playing a game after admitting he no longer feels motivated.

A statement from the club said that after a meeting between club bosses and Vieri "both parties agreed that the professional basis on which the agreement was signed no longer exists".

Vieri played for Monaco in the French league last year but missed much of the season because of a knee injury.

Capped 49 times for Italy, Vieri played just seven French league games since January scoring three goals and was not selected for the World Cup.

The striker has scored 130 goals in his career notably with Juventus (1996-97), Lazio (1998-1999) and Inter Milan (1999-2005).

He was the top Italian league scorer in 2003 with Inter Milan.

Vieri also played for Atletico Madrid, scoring 24 goals in as many matches in 1997-1998, finishing the season as the top scorer in the Primera Liga.