PSG visited Bayern's Allianz Arena on Tuesday and a section of the home support unveiled a banner with a profanity aimed at the "plutocratic Al-Khelaifi".
"We concede a lot of goals because we are not stable," complained Guardiola.
Bayern Munich striker Harry Kane hit back at criticism levelled at him, saying he would do his "talking on the pitch" after becoming the fastest to 50 goals in Bundesliga history on Friday.
The German giants, who went without a trophy last year for the first time since 2012, are primed for a return to the winner's circle.
Struggling in Europe after back-to-back losses left them outside the knockout places, Musiala broke through the stubborn Benfica defence, heading in a Harry Kane assist.
Bayern Munich will learn from their 4-1 Champions League defeat to Barcelona but the German team's belief in a successful season is intact, coach Vincent Kompany said on Saturday ahead of Sunday's league game against VfL Bochum.
Bayern Munich coach Vincent Kompany and his Bayer Leverkusen counterpart Xabi Alonso on Friday joined the growing chorus calling for action on player workload, amid talks of strikes.
A street next to Bayern Munich's Allianz Arena stadium will be renamed to honour German football great Franz Beckenbauer who died earlier this year, the city council announced Thursday.
"Something big is coming," Neuer told reporters ahead of Tuesday's opening clash with Dinamo Zagreb at home.
"I don't want to sound like a broken record but the world will be really a different place without him, at least for me," Klopp told the club website
"It's been tough here without the family for these four months, without the kids and without the wife," he added.
Kane scored twice and now has 20 goals from just 14 league matches since joining Bayern in the summer from Tottenham.
"What I know is I never think in a negative scenario. We think positive, so we know what to do," Ten Hag said on Monday
UEFA has fined Bayern Munich and threatened to ban fans from upcoming away fixtures due to supporter behaviour in European competitions.
Bayern Munich suffered a jolt to their title defence, losing their first league game of the season 5-1 in Frankfurt and handing Bayer Leverkusen the chance to open a six-point lead at the top of the Bundesliga.
Saturday's Bundesliga clash between Bayern Munich and Union Berlin has been postponed due to heavy snowfall in Munich, Bayern said in a statement.
Copenhagen ground out a 0-0 draw at Bayern Munich in their Champions League Group A match on Wednesday to snap their opponents' 17-game winning run in group-stage matches and stay in contention to reach the last 16.
Kane is also the first English player to score 18 times in one season in the Bundesliga.
Bayern Munich coach Thomas Tuchel on Thursday hit out at the crowded fixture list, saying it was "not for the good of the game and not for the good of the players".