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.
Cristiano Ronaldo asked for immunity from the boos of the ever-demanding Santiago Bernabeu crowd after his hat-trick against Bayern Munich on Tuesday fired Real Madrid into the semi-finals of the Champions League for a seventh consecutive season.
Bayern Munich goalkeeper Manuel Neuer may be sidelined for the rest of the season after fracturing his left foot during the 4-2 loss at Real Madrid in Tuesday's Champions League quarter-final second leg.
Bayern Munich left the Santiago Bernabeu furious with referee Viktor Kassai and his team of assistants after being knocked out of the Champions League by Real Madrid on Tuesday.
Borussia Dortmund bounced back from the trauma of the bomb attack on their team bus and their Champions League defeat in midweek to earn an emotion-filled 3-1 home win over Eintracht Frankfurt in the Bundesliga on Saturday.
Cristiano Ronaldo nets his 100th European goal to give holders Real Madrid a 2-1 comeback win at 10-man Bayern Munich.
Security has been tightened around the star-studded Real Madrid squad, led by superstar Cristiano Ronaldo, for Wednesday's Champions League match at Bayern Munich following the Dortmund team bus blast.
Atletico Madrid have grown accustomed to slaying Europe's giants in the Champions League under Diego Simeone, but ending Leicester City's run may prove even tougher than ousting Barcelona or Bayern Munich, according to Filipe Luis.
Gareth Bale, Karim Benzema and Cristiano Ronaldo will be looking to rekindle some of the magic they once served up under Carlo Ancelotti on Wednesday when they face their old coach in the latest edition of Real Madrid's rivalry with Bayern Munich.
Bayern Munich's German international defender Mats Hummels is out of Wednesday's Champions League quarterfinal home clash with Real Madrid after injuring his ankle in training.
Bayern Munich are sweating on the fitness of Mats Hummels for Wednesday's Champions League home clash against Real Madrid after the Germany defender injured his ankle in training on Sunday.