Mancini: “I hope this is a lesson for him. In football you always need to be professional, always serious, and he wasn’t."
Absolutely.
For people criticizing Mancini, what about Mario's own teammates who were upset by this? Are they all wrong?
To be a champion, everyone must be on the same page. There can be no divisions. We have to be cohesive, and doing something like that just brings more arguments within the first team and more media distractions.
Mario put Mancini in a bad position. If he hadn't taken him out, the headlines would read that Mancini had lost control, bent to the will of the player, etc. You can say that you don't care about the media, but it's unwanted attention that can't possibly help us.
He needs to grow up and understand how the real world works, and also that Mancini has enough grey hairs trying to keep his job without Mario adding to them. This could have been a day of joy as we destroy Beckham FC and shove crow down his lying throat. Instead we're talking about this.
This has nothing to do with whether a friendly has meaning or not; these friendlies are about building team unity and cohesion. Mario should ask himself one question: did he do it for himself or the team?