undesliga club Cologne has asked a higher administrative court for a ruling as they aim to overturn coronavirus regulations restricting attendance to 750 spectators.
The court in Münster confirmed on Tuesday that a letter from the club arrived on Monday.
The state of North Rhine-Westphalia, where Cologne is located, does not allow more than 750 fans into stadiums in the latest restrictions which are valid until Feb. 9.
Cologne want this overturned and be permitted to have at least 10,000 fans present, or better even 24,000, on Saturday against Freiburg.
Borussia Dortmund and Arminia Bielefeld, who also play at home on the weekend, had announced legal action as well, but the court said it has so far received nothing from them.
When a ruling will come is unclear.
The state government has until midnight Wednesday to make a statement.
The court said it can not make a ruling on the actual number of fans allowed into stadiums but only say whether the government restrictions for big sporting events are just or not.
Other German states allow more fans to Bundesliga games, such as Baden-Württemberg (6,000) and Bavaria (10,000).