The first thing i want City to change for next season is that ridiculously high line we play. I always say that if the opposition hit a ball over the top or play a pass through the middle, if the defence are standing in a straight line and the opposition attacker times his run perfectly, one ball can take the whole defence out of the game leaving the attacker bearing down on goal.
I really do think we need to tweak our tactics as they were absolutely suicidal against Lyon and have been on a number of occasions this season. Liverpool don't play such a high line like us, i don't see why we need to do the same. At least have one or even 2 defenders sitting 5-10 yards behind to sweep up anything that comes through the middle or over the top of our defence.
I do think Koulibaly is a very capable defender and will improve us, but it is up to Pep to make a few tweaks and not make us look so susceptible to being counter attacked.