There is a chance that Paul Pogba won't be able to play in the World Cup due to an injured knee.
He has not played this season due to an injury.
The first World Cup match is between France and Australia.
"This morning, after training for a second time, it was decided that he would have surgery," said Allegri.
He will be back in January.
The first winter World Cup will take place in November and the season will be paused after games on 13th of November.
Allegri said that the World Cup was not his problem, and that he would return in January.
After his contract with Manchester United expired, Pogba returned to Italy.
He scored in France's victory over Croatia in the World Cup.