When I did my coaching badges 'Playing out from the Back' was worked on in four different ways. It certainly doesn't just mean passing out via the centre halves, 'round' the opposition. You can play direct 'into' one of your midfielders, typically when they drop in. This should have been Kamara but it didn't happen at all yesterday. You can also play 'onto' either full backs who are pushed up high. Villa did this a lot yesterday. Finally you can play out by going 'over' and direct from goalkeeper to forward line. Man City do this really well. When coaching myself I would encourage my goal keeper to go direct to push teams back when they had begun to push up and make playing out difficult. Emi very rarely acts quickly to set up a quick counter attack like this.