Bayern Munich were outclassed by Barcelona 4-1 in a bitter reunion with their former coach Hansi Flick in the Champions League on Wednesday. Flick won the Champions League with Bayern in 2020 in a campaign that included 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. “Congratulations to the team. I’m happy because this is a very young team. I’m very proud,” Flick told broadcasters DA…