Opinion on Berbatov has been divided during his two seasons at Old Trafford, with many not appreciating his languid style and feeling he does not put enough heart into his performances.
And it seems Berbatov has taken too much notice of the bad publicity as, ahead of Sunday's encounter with Liverpool, Ferguson has revealed he had to tell his club record £30.75 million record signing to stop listening to the critics.
"Not everyone has questioned Dimitar,'' said Ferguson. "He has a lot of admirers, particularly at this club. But when we buy a player for a lot of money, there is more focus on him. If they have an odd bad game there is a criticism which other players may not get.
"He worried about it himself, however, as I told him, he has to dismiss the press. Dimitar has had some terrific games for us. He is enjoying his football and he will play on Sunday.''
Berbatov currently tops the United scoring charts with four and Ferguson admitted he may have made an error leaving the 29-year-old out of his squad for Tuesday's Champions League stalemate with Rangers, when his invention could have been very useful.