Abou Diaby has urged Arsenal to land a psychological blow in the Premier League title race by prevailing in the FA Cup at Old Trafford on Saturday.
The Gunners face arch-rivals Manchester United in the fifth round, four days before they host AC Milan in the last 16 of the Champions League.
Diaby, who will miss the game with a calf injury, insists his team-mates must put all thought of Europe out of their minds as they seek to damage United's confidence in the title race.
'I expect us to go to Old Trafford, play our football and win,' Diaby told Arsenal TV.
'The fact there's a Champions League match against AC Milan will not take an edge off the game. We want to play in every competition.
'Whether it's Champions League, FA Cup or Premier League, we want to win everything because Arsenal is a big club.
'Manchester United are a very good team with some massive players.
'They are doing very well this year and it will be tight between us, them and Chelsea for the title right until the end of the season.
'Maybe if we beat United we'll get an advantage over them for the title. We will give our best against them and win.'
Cesc Fabregas looks set to be involved against United despite suffering from a throat infection.
Fabregas revealed yesterday that Arsenal have opened negotiations over a new contract, even though his existing deal does not expire until 2014.
And the Spain midfielder insists he is committed to winning silverware at the Emirates despite renewed interest from hometown club Barcelona.
'I have contract in force until 2014,' said Fabregas in an interview on radio station Cadena Ser.
'I have six years remaining and I am talking with my club, who are interested in renegotiating it.
'I want to succeed at Arsenal and that the club wants me is fundamental for me.
'I am proud (to be linked to Barcelona), I am from Barcelona and I have played there.
'But now I only think of winning as many titles as possible here (at Arsenal).'