Sir Alex Ferguson has labelled Arsenal a more aggressive side than they were last year.
The Manchester United manager is preparing for another showdown with Arsene Wenger's men at Old Trafford on Monday night knowing a place at the top of the Barclays Premier League is the prize for the winner.
"I think they'll still try to play the attractive football Arsene believes in, but there's definitely been a slight change" Ferguson told www.manutd.com.
"The general shape of the team has been far more mature and aggressive this year.
"They're top of the league - that's a sure indication that they are better than they were last year and they'll have a chance.
"They were very difficult to beat in the days of Emmanuel Petit and Patrick Vieira and the three at the back - Keown, Adams and Bould. That brought them great success and I think that this team is showing that kind of maturity now."