Perhaps Pep should google 'why do City fans boo the champs league anthem', before he comments again? Educate himself a bit? To be honest, I find it hard to believe that 30 seconds of booing has a detrimental affect on the team, and if it does and they are that weak mentally, we'll struggle to win anything anyway.
It doesn't have any detrimental effect I am certain, Stoke fans were booing constantly the other week and we beat them 4-1.