A police operation is in place for the Arsenal v Galatasary Champions League match tonight.
Officer said flares were lit and thrown onto the pitch during the match and seven arrests have been made. Two men were arrested before the game for attempting to enter the ground with flares, with five others were arrested for criminal damage, being wanted on warrant, public order offences and throwing a flare onto the pitch.
Flares were also thrown near to the Tollington pub in Hornsey Road, N7 before the game, but no arrests were made.
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Arsenal manager Arsene Wenger believes Tottenham will never maximise their potential on or off the field until they have moved to a new stadium.
This evening the two north London sides will go head to head at the Emirates Stadium, the Gunners' 60,000-seater home since 2006 for which the club continue to pay off at around £35 million per year against a long-term fixed interest rate bond.
Wenger said: "You cannot be in a business where you turn down 15,000 or 20,000 people every week. If your competitors have more financial power than you, at some stage you have to make a decision."
The Manchester United manager Louis Van Gaal has said the club agreed to sell the England striker Danny Welbeck to Arsenal because he did not have the goalscoring record of other strikers at the club.
Welbeck joined the Gunners right at the end of the transfer window after United brought in Colombian striker Radamel Falcao. He scored ten times for United last season.
"With Danny Welbeck, yes, he was here from when he was nine. After coming back from Sunderland he has played three seasons for Manchester United. But he doesn't have the record of Van Persie or Rooney, and that is the standard."
Welbeck could get his first game in an Arsenal shirt against Manchester City on Saturday.
Arsenal have announced the signing of England international forward Danny Welbeck from Barclays Premier League rivals Manchester United for an undisclosed fee.
The 23-year-old, who is currently with Roy Hodgson's national squad ahead of fixtures against Norway and Switzerland, has signed a long-term deal at the Emirates Stadium to become Arsene Wenger's fifth summer signing - with the deal announced almost two hours after the initial transfer deadline had passed.
He leaves United after coming through the ranks at Old Trafford - developing his craft with loan spells at Preston and Sunderland - but new Red Devils' boss Louis van Gaal has allowed the player to leave in search of regular first-team football.
Arsenal have agreed a deal in principle to sign Manchester United and England forward Danny Welbeck as talks continue to complete the deal before the close of the transfer window.
The 23-year-old appears set to be given the opportunity to leave Old Trafford.
The Gunners must secure a deal before the 11pm deadline.
Arsenal manager Arsene Wenger is at a charity football event in Rome.
Gunners fans are getting anxious on Twitter, as a photo taken at Heathrow Airport appears to show manager Arsene Wenger travelling to Rome to referee a charity football match on transfer deadline day.
Various sources saying Hull are in for West Ham's Mo Diame
And, the Guardian are reporting that both Arsenal and Spurs are interested in Manchester City's Serbian defender Matija Nastastic.
Arsene Wenger is hoping that his team's big match experience will see them through to the group stage of the Champions League. The Gunners must beat Besiktas tonight at the Emirates Stadium in the second leg of their Champions League qualifying tie - the first leg last week finished 0-0.
However, they will be without midfielder Aaron Ramsey who is suspended after being sent off in Istanbul. Striker Olivier Giroud is also out after picking up an injury. But Wenger believes his team is strong enough to cope:
Experience plays a big part. We have big experience in the Champions League of playing high pressure games and we can use that. This group is strong and mentally prepared and ready for the fight. What's most important is that we go out and play at our best.
Arsene Wenger has said that his club will adapt financially if they fail to qualify for the lucrative group stage of the Champions League. Arsenal play Besiktas tonight at the Emirates Stadium in the second leg of their qualifying tie. The first leg in Istanbul finished 0-0 so the Gunners are at risk of going out, especially if they concede an away goal.
A place in the group stage is worth millions of pounds but Wenger said his club could cope if they fail to qualify:
"It will affect us because we'll have less income, but it will not affect our balance sheet in a dramatic way because we can survive without that. We want to be in the Champions League because we want to play top level football. Financially we've always adapted. When we had small resources, we always adapted to having small resources."