European governing body UEFA said on its website that Tuesday's last 16, first leg game between Inter Milan and Valencia will have a permitted capacity of 36,000, with five per cent reserved for visiting supporters.

The game between AC Milan and Celtic on March 7 will also have a crowd cap, but this has yet to be determined. The capacity will, however, include 4,500 seats reserved for Scottish fans.

Doubts had been cast on the staging of the games in the San Siro after the strict crowd-control measures brought in by the Italian government following the violence in Sicily that led to the death of a policeman.

The San Siro was one of the grounds that fell short of the basic standards set down by the government, but a crowd of 21,000 Milan season ticket holders watched AC Milan defeat Livorno on Sunday after 28 new turnstiles were installed.

UEFA said that they had been informed of the venues by the Italian Football Federation (FIGC) after they had consulted with the Italian Home Affairs Ministry.

"The FIGC told UEFA that the stadium was already in conformity with some of the measures provided for by Italian law and that additional work was undertaken to fully comply with new measures that have come into force," UEFA said on its website.

"However, some work must still be done before full capacity will be allowed at the venue."