Alves at Barca was the absolute master of the run behind the defence, for the little diagonal pass, to get behind the parked bus which Pep has recently been pushing City to play. And then doing something useful from that position, rather than wasting it.
Anyone playing in the squad can learn it from him.
This. Incredibly intelligent footballer and a massively important part of Barca's success. Always viewed him as the most important cog in the Pep era at Barca