Arsène Wenger knows it will take "a great performance" from Arsenal to beat Manchester United on Sunday - even if they have already been crowned champions.

Sir Alex Ferguson's team clinched the Premier League title on Monday night with four games to spare, beating Aston Villa 3-0 at Old Trafford.

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It's not unknown for teams to lose some intensity after winning a prize - Wenger's first Double-winning side lost their final two matches after securing the title in 1998 - and the Arsenal manager is not sure what to expect.

"As you say, they can relax but it's very difficult to know that," he said. "What we know is that no matter what state Man United will be in, we will need a great performance to beat them and that's what we want to focus on.

"I don't know [if they are motivated by a record points haul]. I expect them to come and try and play their game and win the game, like they always do when they come to the Emirates.

"We can only focus on our own performance. We are on a very strong run in the last 10 games and we have a good level of confidence.

"We have a great desire and it's a good opportunity to show for us that we have moved forward in this league since we played them last time at Old Trafford, which I think we have. It's a good opportunity to show that."

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Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source Chris Harris 26 Apr 2013