Season ticket holders only will be admitted to the San Siro

All football across the country was suspended last week after the death of a policeman in crowd trouble in Sicily.

Rome's Olympic Stadium and grounds in Genoa, Siena, Cagliari, Palermo and Turin are also being allowed to open.

Stadia failing to meet regulations will stay shut while the government approves anti-hooliganism measures.

Italian stadium lockout plan

Police officer Filippo Raciti died after he was struck by a blunt object during rioting at the derby between Catania and Palermo on 2 February.

The intial ban on fans at the San Siro had raised doubts about AC Milan's Champions League last-16 tie with Celtic.

The game could go ahead behind closed doors, and Newcastle and Swiss outfit Geneva have offered to stage the game, but there has been no announcement yet about whether or not the game will have to be moved.

The president of Palermo warned that the government's unyielding stance would fail to curb the violence.

"They have drawn up these measures without listening to the clubs that have been fighting violence for years," Maurizio Zamparini said.

"Even if we close the stadiums, these criminals will do the same outside."

The policy will hit Italy's lower divisions even harder than Serie A.

An estimated �9.9m (15m euros) is lost by halting a day's games in Italian football.