Pep Guardiola acknowledged the significant challenge ahead for his Manchester City side as they prepare to take on either Real Madrid or Bayern Munich in the Champions League play-offs.
The Premier League giants narrowly avoided an early exit from the competition after staging a comeback to defeat Club Brugge 3-1 at the Etihad Stadium.
The defending champions found themselves in trouble when Raphael Onyedika fired the Belgian side into the lead just before the half-time whistle.
Had the result remained the same for the entire game, City - who were sitting outside of the top 24 teams in the competition - could have been eliminated from the Champions League.