Rooney has to rest due to his injury for about 4 weeks, and Berbatov will be the right person to be his replacement.
Nemanja Vidic told The Sun, that Berbatov can do whatever he needs to do to save the team, just like when they face Bolton.
Without Wayne Rooney, there’s no doubt it will effect their performance, but they will try as hard as they can to play as a team, and shows more confident aswell.