Seeking a "level-playing field" in the ensuing poll, former premier Nawaz Sharif on Sunday demanded a complete roll back of emergency by Pakistan President Pervez Musharraf [Images] and ruled out serving under his presidency.

"He (Musharraf) has to first roll back all that he has done since November 3, that is very essential. Everything he has done since November 3 has to be reversed and rolled back completely before we could discuss about the possibility of any talks," Sharif told CNN over phone in Medina prior to his departure to Lahore [Images] on a special Saudi government plane.

Asked if he would agree to a power-sharing deal that envisaged Musharraf as president and him as prime minister, Sharif said: "No, no, no, no question."

Ahead of the planned general elections in January, Sharif urged Musharraf to ensure a "level playing field" to facilitate free and fair polls.

Sharif was asked whether he will "accommodate" the general, who ousted him in a bloodless coup in 1999, or have talks with him.

"I can't alone decide. Of course the All Parties Democratic Movement can decide on it (holding talks with Musharraf," the 57-year-old leader of Pakistan Muslim League-N added.

He said the APDM, an opposition grouping of which the PML-N party is a member, would take part in the polls only if Musharraf ended the emergency and released all arrested opposition members.