Nemanja Vidic says Manchester United's team spirit is key to their success in recent years.

"You cannot have good results without a great atmosphere in the camp," Vidic told Fifa.com. "That is a reality, every club needs that. But, the most important thing is that the atmosphere is not fake, it must be genuine and good-natured.

"We have a great team spirit. After that, when you have quality players like we have at United, good results are normal.

"During the last few weeks, some players who were not playing earlier on in the season have came in to the team and been brilliant, showing what a strong squad we have. They've done really well.

"The most important thing is that we are strong collectively, as a team."