Bayern Munich were outclassed by Barcelona 4-1 in a bitter reunion with their former coach Hansi Flick in the Champions League. Flick won the Champions League with Bayern in 2020 in a campaign that included a a 8-2 thrashing of Barcelona. Now, in charge of the Spanish team, his side was led to victory by a hat-trick from Raphinha, his first goal coming in the first minute as Barcelona had a ruthless start. Former Bayern striker Robert Lewandowski was also on target. Erling Haaland scored twice in Manchester City’s 5-0 thrashing of Sparta Prague, while Liverpool made three wins in three games w…