Caporegime
That seems a bit naive when we're talking about the manager of the biggest club on the planet. There's a time and a place to ask players what they think can be done better, putting it on them during a 15-minute break when you then go on to lose the game looks a bit suspect.
I can't tell from the article preview but it doesn't say when these talks happened, it could have been after the final whistle. Even if it did happen at halftime I don't see a problem really, not sure why a dialog happening would be a bad thing. I'd be more concerned if players weren't speaking up about problems.