The San Siro grass had always problems since 1990, with the construction of the 3° ring and the roof, the sun shines the grass very little, and Milano it's not a city famous for his sunshine.
So AC Milan and Inter society are not happy to see 20.000 people on the grass.
Then people who live around the stadium for every concerts (vasco rossi, stones in 2003, springsteen...) fight a RIDICULE war against the city municipality, causue they say that music is too hight, they can't sleep, when every sundays 80.000 people scream for AC Milan....
Rolling Stones Italia
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www.rollingstonesitalia.com]