Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

A fan of German soccer club 1. FC Union Berlin holds a cup during a gathering at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gesture while gathering at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin hold candles and scarves while gathering at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin gather at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin are pictured wearing Christmas hats at the 'Stadion An der Alten Foersterei' stadium, where they gathered to sing traditional Christmas carols, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Fans of German soccer club 1. FC Union Berlin arrive at the 'Stadion An der Alten Foersterei' stadium to sing traditional Christmas carols together, after a two-year break due to the coronavirus disease (COVID-19) pandemic, in Berlin, Germany, December 23, 2022. REUTERS/Annegret Hilse 

Markus Gisdol, coach of German soccer team FC Cologne conducts a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

An empty playground is seen at the headquarters of German soccer club FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players and team members of German soccer team FC Cologne attend a training session, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Christian Osebold, physiotherapist of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players and team members of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players and team members of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Markus Gisdol, coach and Jonas Hector, player of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Jhon Cordoba and team mates of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players and team members of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Markus Gisdol, coach of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Birger Verstraete, player of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Mark Uth and Elvis Rexhbecaj of German soccer team FC Cologne arrive at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Kingsley Schindler, player of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Christian Clemens, Sebastiaan Bornauw and Rafael Czichos of German soccer team FC Cologne arrive at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. 

Simon Terodde and Florian Kainz of German soccer team FC Cologne arrive at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Players and team members of German soccer team FC Cologne arrive at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Rafael Czichos, player of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Birger Verstraete, player of German soccer team FC Cologne walks at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Team members of German soccer team FC Cologne walk at the clubs headquarters, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

The logo with the slogan "noticeably different" is seen at the headquarters of German soccer team FC Cologne, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

A general view shows of the headquarters of German soccer team FC Cologne, after the club announced the positive testing of 3 players on COVID-19, as the spread of the coronavirus disease continues in Cologne, Germany, May 4, 2020. REUTERS/Thilo Schmuelgen 

Jerome Boateng and team mates of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

A general view shows players of German first division soccer club Bayern Munich during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

A general view shows players of German first division soccer club Bayern Munich during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Players of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Players of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Players of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Players of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Players of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Journalists follow a training session of German first division soccer club Bayern Munich, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Goalkeeper Manuel Neuer and Sven Ulreich of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Goalkeeper Manuel Neuer and Sven Ulreich of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Goalkeeper Sven Ulreich of German first division soccer club Bayern Munich tries to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Jerome Boateng and team mates of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Jerome Boateng and team mates of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert 

Goalkeeper Manuel Neuer and Sven Ulreich of German first division soccer club Bayern Munich try to keep a safe distance during their training session, as the spread of the coronavirus disease (COVID-19) continues in Munich, Germany, April 6, 2020. REUTERS/Andreas Gebert