Mrs Berbatov told the Mirror: "Mitko, my son, will stay at Tottenham until the end of his contract. He will not be leaving and he has already said this. Anything else is not true."
The blast, however, flew in the face of comments from her husband Ivan and son Asen, who both insist the Tottenham striker is unhappy and regrets not moving to United in the summer.
Berbatov himself has hit out at the involvement of his family in the situation.
But his cause is also not helped back in his native Bulgaria by TV chiefs who repeatedly invite members of the Berbatov clan on air every time the striker plays.