Raheem Sterling and John Stones acknowledge Manchester City still have work to do in the second leg at Monaco.
Sergio Aguero netted two goals and added an assist to help lift Manchester City to a thrilling 5-3 victory over Monaco.
Monaco's Radamel Falcao overpowered the Man City defence and ended his run with a world-class chip over the keeper.
Just the 14 goals, incident aplenty as Man City beat Monaco 5-3 and Atletico overcame Bayer Leverkusen 4-2. What a night.
Manchester City overcame Monaco in an eight-goal thriller at the Etihad Stadium, coming from behind to run out 5-3 winners.
Sergio Aguero scored twice as Man City overcame a 3-2 deficit to earn a thrilling first-leg win over Monaco.