Captain Nemanja Vidic is convinced that the "Red Devils" have to play even better if they don't want to suffer the fate of London's Chelsea team.
A few weeks ago, the capital club firmly led the English Premier League, but now with only two wins in 10 games they are in fifth place.
"We need to play better and get our players back from injuries," said the Serb. "We believe we can win the league, because this season we have shown that we can play solidly.
We haven't lost yet, but this year is different. If someone had said five weeks ago that Chelsea would be in the position they are now, I wouldn't have believed it.
Everyone thought they were the strongest team and will win the title, but then they lost points in six consecutive games. Look at how many points we've lost, but we are still unbeaten and on top of the league table."