City vs Roma - what can we learn from a pre-season friendly?

As usual a lot more will be made of what happens in pre-season friendlies than should be. That said, a few observations on today's game against Roma.

• Sterling made a lively start. First touch steps on the ball, second scores. All in the first couple of minutes. There were signs that he could work well with David Silva. If they can get an understanding together, and you add Aguero, there's a lot of potential in that forward line.
• Kelechi Iheanacho has talent and played very well. But something is missing. A couple of incidents in the first half highlighted this. First, Silva had the ball on the edge of the box and he stayed close to him instead of making a run. Second, he had the ball on the edge of the box with options both ways but hesitated and lost the ball. His passing and movement off the ball aren't quite there yet. It's hopefully just a lack of confidence and trust in others which means he's reluctant to take a risk. If so, that will come with time.
• Are we switching to a 4-3-3 this season? Pellegrini has always preferred 4-4-2 and at the end of last season it was a 4-2-3-1 formation (which I think gets the best out of David Silva). But we've started with a 4-3-3 in all the friendlies so far. (I'm ignoring the apparent 4-1-4-1 we started the 2nd half with).
• David Silva is a joy to watch (although that's been obvious for years).
• Some of the young players played well. We really need to find a way to get some of them into the team.
• A penalty shoot-out in a pre-season friendly is both pointless and enormous fun.