Arsenal entered the match as league leaders, two points in front of second-placed
Chelsea. Their previous league outing was a 3–1 win against
Aston Villa on 16 October 2004. The victory extended Arsenal's
unbeaten league run to 49 matches, which set a new English football record. On the same day, Manchester United played out a 0–0 draw against
Birmingham City. United sat in sixth position, 11 points behind their opponents. Their inconsistency was documented by several newspapers in the build-up to the match; David Lacey wrote in
The Guardian of 23 October 2004: "Manchester United, it is said, are in a period of transition but if by Christmas they have not begun to pick up, their critics will begin to wonder at what precise point does transition become decline." was highly critical of Arsenal's behaviour before the match. The significance of the fixture for the two clubs was increased by the fact that, had Arsenal avoided defeat, they would have extended their unbeaten league run to 50 matches. Wenger told reporters at his press conference that he felt no increased pressure, though added the team's midweek draw in the
UEFA Champions League at
Panathinaikos increased expectation. He admitted his team's behaviour in the fixture last season was unacceptable, but pointed out "... the best response we gave was to win the fair play table. That meant we took responsibility for what we did and we have improved our attitude." Wenger believed United's strengths lay in creativity, and did not want to set his team out to nullify, rather to "... play our game based on speed and technique." In the lead-up to the match, Ferguson criticised Arsenal's previous conduct at Old Trafford and likened their behaviour to that of a mob: "What Arsenal players did that day was the worst thing I've seen in this sport. No wonder they were so delighted at the verdicts." He described the game as must win given Arsenal's points advantage, but highlighted it was still all to play for given the league leaders needed to play several top teams twice.
Mike Riley was selected as the referee for the match; the Yorkshire-based official and England's representative referee at
Euro 2004 had sent off five players in his last six games. Such was the concern another brawl would take place,
Greater Manchester Police officers spoke to Riley to underline the need for players to behave themselves. The most recent meeting between the two teams was in the
FA Community Shield on 8 August 2004, when Arsenal won 3–1. Manchester United beat Arsenal en route to winning the FA Cup the previous season and were undefeated against their league opponents in almost two years. ==Match==