Pep Guardiola is keen to ensure that his Manchester City side do not take their first leg lead for granted when Manchester United head to the Etihad Stadium later this month.
Goals from Bernardo Silva, Riyad Mahrez and an own goal from Andreas Pereira helped City on their way to a convincing 3-1 win at Old Trafford, but Guardiola knows what threats United can cause.
“It is not over as it's United and we saw last season, at PSG (in the Champions League) for example, what they can do,” he said.
"I have the warnings after what happened in the second half. Anything can happen in one game and they have the quality to make good actions. They scored two goals in the Premier League game so they are able to do it.”
“Hopefully in front of our people they can support us like Manchester United supported their team and qualify again for the Final.”
The Spaniard chose to leave Gabriel Jesus and Sergio Aguero on the bench and start the game with no recognised striker on the field, and says the reason for doing that was to nullify United’s counter-attacking threat.
“I have used that formation many times in my career, in the past, I wanted to control their counter-attacks and the only way to do that was to get more passes in, so that is the reason why I played that formation,” he added.
“At this moment where you arrive in the Semi-Final, we always believed if we play how we could, that it would be the best weapon to win the game.
“We are close to getting to the Final but in three weeks many things can happen, so I want us to enjoy the night, celebrate it, but nobody is going to say that this tie is over."