The center back insists that he and his teammates must accept responsibility for the Red Devils' below-par campaign thus far, hailing his boss' "good character."
The Red Devils have struggled since replacing Sir Alex Ferguson with the former Everton boss, languishing in seventh place in the Premier League table as well as suffering a third-round exit from the FA Cup.
Vidic is refusing to blame the arrival of a new coach at Old Trafford, however, insisting that the players' sole responsibility is to win trophies, regardless of who is in charge.
"We had changed our manager, there was a lot of focus in the media on how we would do, but my expectations at the start of the season were the same," he said. "They are the same every year at Manchester United, not just because we had a new manager. Those expectations come from the players, the club, the fans as well as the manager. At United there is always a demand to win games and win trophies."
The United skipper, whose agent has suggested could leave the club when his contract expires in the summer, bemoaned his side's tricky start to the season that saw it face the likes of Chelsea, Liverpool and Manchester City before October.
"We had a tough start in the Premier League, we didn’t hit that winning run and get our rhythm which would have given us that confidence," he said. "The manager was very open from the minute he came here. He knew exactly what he wanted to do and achieve. We had some good training sessions and preparation in preseason.
"The manager is a good character. He talks and encourages people. But it’s up to the players too. We are a group and it’s the group’s responsibility to deal with situations. But I didn’t expect it to be this crazy."