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.
PSG forward Mbappe says the best is yet to come after his fantastic display helped PSG win 3-0 against European powerhouse Bayern Munich.
Bayern Munich coach Carlo Ancelotti says that PSG and Italy midfielder Marco Veratti used Barca transfer speculations to try and get an improved contract.
Carlo Ancelotti admits Bayern Munich were caught cold in their 2-0 loss at Hoffenheim, a defeat that left them fifth in the Bundesliga, their lowest position since 2014.
German champions Bayern Munich beat Cup holders Borussia Dortmund 5-4 on penalties to win a record sixth Super Cup after the entertaining curtain-raiser to the new season finished 2-2 in regular time.
Bayern Munich coach Carlo Ancelotti says there is "no way" that Arturo Vidal would leave the club but admits that Renato Sanches could be on his way.
Bayern Munich boss Karl-Heinz Rummenigge confirms they have dropped their interest in signing Arsenal striker Alexis Sanchez for next season.
Bayern Munich complete the signing of Serge Gnabry from Werder Bremen for an unconfirmed fee believed to be in the region of €8 million.
Bayern Munich will farewell two giants of the game on Saturday when World Cup winners Philipp Lahm and Xabi Alonso retire from professional football.
Bayern Munich central defender Javi Martinez will miss the last two matches of the season after breaking his left collarbone during a mountain hiking trip in Spain, the German champions said on Wednesday.
Bayern Munich have activated a clause to make winger Kingsley Coman's transfer from Juventus permanent at the end of the season, the German club said in a statement.