Richard Dunne has proved to be a decent signing for BT Sport, as the Irish legend is used in a holding role whenever Manchester City are playing in the Champions League.
We like seeing Dunney on the telly, not least because he is a great man but also because he rarely opts for the cliche and instead expresses his actual opinion. You'd think more pundits would do that, but they don't.
Anyway, Dunne was asked to discuss his former club's slump in form after such a bright start under Pep Guardiola, and he pointed to the efforts of Celtic as a big reason for it.
Dunne believes that Celtic shown everyone the blueprint for how to play against Pep's system.
I think they've been sussed out a little bit since they played Celtic, things haven't really gone their way.
Celtic have maybe shown the other teams how to play against them. They will come again and they will adjust, but they need to stop the errors.
They're giving teams chances in every game, that's the problem for them.
He's got a point. Everything was going swimmingly for City until their trip to Glasgow, and after shipping three goals in that game they have not looked convincing since.
Barca were extremely comfortable in the second half as City made a catalogue of errors, something Dunne also pointed to for their poor form.
They do seem to be having a lot of brain-farts lately, and those will need to be ironed out as the matches come thick and fast up until the next international break.