Utilize the input text as a context reference, choose the right relationship between Fininvest and Milan from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Italy's former prime minister Silvio Berlusconi, who controls Mediaset, has signed a pre-sale agreement to sell 48 percent of his AC Milan soccer club to a group led by Thai businessman Bee Taechaubol by the end of September, a spokesman for holding company Fininvest said on Sunday.

Answer: headquarters_location