Kolo Toure believes Manchester United 'struggle a lot' when Arsenal play at their attacking best.
The Gunners face their Premier League rivals in the first leg of their UEFA Champions League semi-final tie on Wednesday.
Arsenal have already beaten the European champions this season, defeating them 2-1 at Emirates Stadium last November.
And Toure is in bullish mood ahead of the clash at Old Trafford, insisting that he is 'not scared' of the Red Devils.
"For me I am not scared of any team. I know what I have to do when I play," said the Ivorian.
"There is more pressure on United because they are the team to beat.
"United are the ones who won it last season, but for us we are going there to do the best we can playing free and passing the ball.
"We know when we play football against Manchester United, they struggle a lot."
Toure continued: "United are a really good team going forward, but, like us, at the back they have conceded a few goals.
"We have the same type of team - we both like to play, but sometimes you can be caught out at the back.
"The team that will win will be the one which defends the best. It is going to be a really big fight."
Toure also expressed his backing for teenage left-back Kieran Gibbs, who is set to continue to deputise for the injured Gael Clichy against United.
He said: "Let him play. Kieran came in at a really difficult time when we play the big teams and he has showed good character.
"He is intelligent and I think he is going to perform very well on Wednesday. But it is not only about Gibbs - it is about all the players.
"If we are focused and defend together, then nobody can beat us."