Germany’s online casino crackdown has extended its reach to the nation’s football teams and their sports betting sponsors.

On Friday, German media reported that the Ministry of the Interior for the state of Baden-Würtemberg had written a letter to the German Football Association (DFB) expressing concern that the DFB’s sponsor, GVC Holdings’ Bwin sports betting brand, was offering gambling products that are illegal under German law.

The letter, which was issued with the support of the other German länder (states), pointed out that Bwin offers “online casino and slot games” in addition to its mainstay sports betting product. The Ministry noted that German law “leaves no room for doubt about the illegality of such offers” and warns that if changes aren’t forthcoming, “there is a risk that the advertising of Bwin is prohibited altogether.”

The letter sets up an interesting game of chicken. If German authorities prove serious about enforcing their sponsorship views, German broadcasters may be prohibited from airing football matches in which the logos of Bwin or other German online gambling operators — such as Tipico, which sponsors the Bundesliga (DFL) and teams like Bayern Munich – are visible.