Japanese automaker Nissan Motor Co Ltd's premium brand Infiniti will announce a marketing agreement with U.S. basketball star Stephen Curry on Wednesday, according to a company statement seen by Reuters. In his first campaign for the company, the point guard for NBA champions the Golden State Warriors would feature in advertisements for the redesigned Infiniti Q50 flagship sports sedan, due for a launch around the world from August, the statement said. Nissan is expected to publicly announce the campaign later on Wednesday.