Despite all City's first-half dominance, they were caught out as PSG raced out of the traps at the start of the second half.
PSG's Kylian Mbappe became the second youngest outfield player to reach 50 Champions League appearances in this match after Cesc Fabregas.
To accommodate that, Herrera and Gueye constantly dropped into the full-back positions during the buildup, as shown in the figure below.
When a team likes to keep more possession, it is key that they press the opposition high in order to win the ball quickly.