The inaugural event at U.S. Bank Stadium is about 50 percent sold according to Vikings executive vice president of public affairs Lester Bagley.

The Aug. 3 international soccer match featuring Italian club AC Milan and four-time Premier League champion Chelsea is one of 10 matches scheduled in the United States this summer as part of the Champions Cup series.

"SMG provided us an update and it's about 60,000 capacity ... and we are at 30,000 tickets sold and there is a lot of work to be done yet," Bagley said during the week of the NFL draft, "but our communications and marketing efforts are about to ramp up soon."

Tickets went on sale April 12 and range from $40 to $175. The game is part of the International Champions Cup competition where the top teams from around the world play in North America, Australia and China.

U.S. Bank Stadium will host concerts for Luke Bryan on Aug. 19 and Metallica on Aug. 20.

The Vikings play their first exhibition at the new stadium Aug. 28 against San Diego. The regular-season home opener is Sept. 18 against rival Green Bay.

Crews began installing artificial turf inside the stadium this week. Natural grass is expected to be laid for the soccer match in August.