In front of more than 90,000 spectators, Pierre-Emerick Aubameyang (29th), Frenkie de Jong (66th) and Memphis (79th) scored for the Catalans, against goals from Julian Alvarez (21st) (who took advantage of a gross foul from hand of Inaki Pena), Cole Palmer (70th) and Riyad Mahrez on penalty at the very end of the match (90th + 7) for the Citizens.
At the end of the game, the Camp Nou was plunged into silence and the match was interrupted for many minutes following a violent shock received in the head by Mancunian Luke Mbete (88th).
The young 18-year-old defender was taken care of by the emergency services.
The meeting gave rise to the first confrontation between Xavi as a coach and his mentor Pep Guardiola, artisans of the great FC Barcelona between 2008 and 2012.
The kick-off was given by former Barça player and coach Juan Carlos Unzué, himself suffering from Charcot's disease.
Barça took the opportunity to show off their new blue, white and red jersey and establish their new French central defender Jules Koundé for the first time.
Author of a feverish performance, the summer recruit of Barça, arrived from Sevilla FC for 50 M EUR, is not yet registered in La Liga due to the economic problems of the Catalan club and an excessive payroll.
Barça continues with the championship on Sunday with the reception of Valladolid (7.30 p.m.), while the Citizens face Crystal Palace on Saturday at 4.30 p.m.
© 2022 AFP