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.
Bayern Munich edged past Werder Bremen 2-1 on Saturday for a Bundesliga record 13th consecutive win over them to stay three points clear at the top of the table.
Robert Lewandowski scored twice, including a stoppage-time winner as Bundesliga leaders Bayern Munich came from a goal down to beat Freiburg 2-1 on Friday and open up a six point lead as the league resumed after the winter break.
Bayern Munich confirmed on Sunday they have signed Germany pair Niklas Suele and Sebastian Rudy from Hoffenheim for the 2017/18 season.
The tale of the Boateng brothers Jerome, George and Kevin-Prince -- two of whom made history by facing each other at a World Cup finals -- has hit the stage in Berlin.
Ralph Hasenhuettl admitted 10-man RB Leipzig had been taught a tough "lesson" as leaders Bayern Munich handed out a 3-0 hammering to their nearest Bundesliga rivals.
Robert Lewandowski led Bayern Munich to a 3-0 triumph in their Bundesliga showdown against ten-man RB Leipzig that opened up a three-point lead over their rivals.
Robert Lewandowski led Bayern Munich to a 3-0 triumph in their Bundesliga showdown against ten-man RB Leipzig that opened up a three-point lead over their rivals.
Bayern Munich face an acid test of their status as Bundesliga leaders in Wednesday's crunch showdown when they host second-placed RB Leipzig, who know they have nothing to lose.
RB Leipzig's goal-scorer Willi Orban is relishing the prospect of Wednesday's Bundesliga showdown and the chance to stop hosts Bayern Munich topping the German league table at Christmas.
Hoffenheim maintained their unbeaten record in the German Bundesliga this season after a 0-0 draw away to Eintracht Frankfurt in a spiky encounter at the Commerzbank Arena on Friday.