MAINZ, GERMANY – JANUARY 09: Christian Heidel, Sporting director of 1. FSV Mainz 05 looks on prior to the Bundesliga match between 1. FSV Mainz 05 and Eintracht Frankfurt at Opel Arena on January 09, 2021 in Mainz, Germany. Sporting stadiums around Germany remain under strict restrictions due to the Coronavirus Pandemic as Government social distancing laws prohibit fans inside venues resulting in games being played behind closed doors. (Photo by Alex Grimm/Getty Images)