The Manchester City striker is hoping to beat the Londoners for the third time this season, as the reigning Premier League champions look to claim a place in the FA Cup final
Aguero is wary of the threat which Chelsea can pose, but feels that Manchester City should have enough quality to fight off any potential threat to their FA Cup dreams.
“We’ve had three close games against Chelsea already this season and we expect the same again on Sunday,” Aguero told City's official site.
“We'll go out looking to win like we did earlier this season when we faced them in the Community Shield and at home in the Premier League – it goes without saying we hope the result is the same this time around.
“I think that Chelsea's current manager is trying to use a patient approach to open teams up rather than utilise the counter-attack. It's probably going to be a very open game and the team who keeps their head at the crucial moments will win.”
Even though the game is a semi-final, Aguero believes that the stadium and stature of the competition makes the match feel even more pressurised.
“Wembley is major stadium to play football in and a great stage for players to show what they are capable of,” he said.
“Even though this is a semi-final, which already ensures it will be a thrilling game; it feels more like a final because of what is at stake.
“But there's no time for regrets. We still have a lot to play for and our number one goal is to win everything we still can. This is a team that never gives up.
“Going forward, I think the main thing we have learned is not to doubt our ability as a team even when things are not going our way.
“We'll always have to trust our strengths and our game. We will make mistakes and have our ups and downs, but if we believe in ourselves, the sky's the limit.”
This season, City have already beaten Chelsea 3-2 at Villa Park in the Community Shield curtain-raiser, drawn 0-0 at Stamford Bridge in the Premier League and won 2-0 in the return League game at the Etihad.