Neuer was ruled out for the rest of the season after undergoing surgery on a broken bone following a skiing accident.
The 25-year-old tested positive during the World Cup in Qatar, which forced him to miss Morocco's 1-0 quarter-final victory over Portugal.
Jamal Musiala scored once and set up two more goals as champions Bayern Munich cruised past Bayer Leverkusen 4-0 on Friday to snap a four-game winless run in the Bundesliga and climb into second place.
Bayern Munich's four-game winless run -- their longest in the Bundesliga in 20 years -- has soured the mood among club bosses and piled pressure on coach Julian Nagelsmann to quickly turn things around.
The French defender is Sevilla's fourth signing of the transfer window after Marcao, Alex Telles and Isco.
The Bavarians put down a marker at the start of the campaign as they look to land an 11th consecutive league crown.
The DFL had predicted a drop in turnover of about one billion euros during the 2020-21 season if fans had to stay away throughout the campaign.
Dortmund start the weekend second in the table and nine points behind runaway Bundesliga leaders Bayern Munich, but with a game in hand.
With 23 league goals so far this season, Lewandowski remains on course to finish as the Bundesliga's top-scorer for the fifth year running.
The 25-year-old joined Bayern from Juventus in 2015, initially on a two-year loan, and went on to score the winning goal in the 2020 Champions League final.
Mueller celebrated his 400th Bundesliga appearance with a goal and an assist as the champions crushed VfL Wolfsburg 4-0 on Friday.
Barcelona crashed out of the Champions League following a 3-0 defeat at Bayern Munich on Wednesday, failing to make it past the group stage of the competition.
Barca, second in Group E behind Bayern, are due to face the German side on Dec. 8 at Allianz Arena.
Mueller has apologised to their fans and admitted the 5-0 thrashing at Moenchengladbach in the German Cup was the worst defeat he has experienced.
The 33-year-old Lewandowski has a Bayern contract until June 2023.
Neuer, 35, needed treatment on his right ankle during Tuesday's 3-1 win at Dortmund in the German Super Cup.
Robert Lewandowski netted twice as Bayern Munich retained the German Super Cup with a 3-1 win at Borussia Dortmund on Tuesday in a high-tempo encounter.
Pavard will miss this weekend's opening game of the Bundesliga season at Borussia Moenchengladbach with an injury.
The bald Dutchman scored his last league goal for Bayern in May 2019, amassing 99 goals in 201 Bundesliga matches.
Davies has returned to German champions Bayern Munich to begin his recovery ahead of the new Bundesliga season.