Amongst what other's have mentioned, this stood out for me..
Played in a more advanced role against les Girondins, Ancelotti recognises the youngster's playmaking qualities and has attempted a few times to move him further up the pitch. Given his tendency to avoid physical confrontation, a role in the attacking third will suit Rabiot who can now learn from Nene, Pastore, Jeremy Menez and Ezequiel Lavezzi, some of Europe's most proficient creators.
Ancelotti has implemented a policy of favouring French talent where possible in an effort to retain some of the club's identity, which detractors including Michel Platini have accused the new regime of overlooking.
Some of PSG's more hardened fans have also championed the causes of some of the club's youth products and Rabiot is the latest in a long conveyor belt of talent.
City's loss was most certainly PSG's gain.