DFL chief Christian Seifert told a news conference on Monday that the previous 2019/20 season had seen a fall in turnover of about six percent or 250 million euros after the COVID-19 pandemic struck midway through the campaign.

But the 2020/2021 season will see a much higher drop in turnover, making the fall last term -- when Bayern Munich retained the Bundesliga title ahead of rivals Borussia Dortmund -- seem like a "gentle breeze", he added.

"The overall loss of fans for the entire season will be about 650 million euros compared to 2018/19," Seifert said.

He added that another 250 million would be lost in terms of money spent on Bundesliga players in the transfer market, while additional revenues from sponsors would also be cut.

"A total turnover loss of one billion or about 20 percent," he said of the outlook for turnover in 2020/21.

He said the overall loss from March 2020 to the summer of 2022 -- a period of just over two years -- could be as much as two bilion euros.

The DFL is in charge of the country's top two divisions.

($1 = 0.8233 euros)

(Reporting by Karolos Grohmann; Editing by Ken Ferris)