The Red Devils have already played away against the rest of the
self-styled 'big four', and have only one point to show for their
efforts.
Their solitary return came in the Stamford Bridge clash with
Chelsea, when Park Ji Sung and Salomon Kalou traded strikes in a
1-1 draw.
United then succumbed to Liverpool at Anfield by two goals to one
and by the same scoreline to Arsenal at the Emirates two weeks
ago.
As a result, Sir Alex Ferguson's side sit third in the league,
trailing Chelsea and Liverpool by a gap of eight points, but with a
game in hand.
Their league form against other opposition has been consistent, but
points need to be taken at Old Trafford against the other title
contenders in order for them to stay ahead of the pack.
Nemanja Vidic understands the importance of maintaining the
pressure on the top two, while keeping Arsenal in check as they
look over their shoulders.
He told the press: "We've played the top three away from home and I
don't think we played too badly, although we conceded goals at bad
times.
"From now on we can't just play well, we have to get the points
too. Yes, we've dropped points, but we're not far off the top
teams,so I'm not worried that much."