Sharif's spokesman said he would meet Pakistan People's Party (PPP) leader Asif Zardari, at whose Dubai residence talks are taking place.
The sides differ over how much power to give to judges whom President Musharraf sacked under emergency rule last year.
Sharif's Pakistan Muslim League (Nawaz), or PML-N, wants all the judges reinstated unconditionally.
While Sharif did not say what he would do if talks failed, his party leaders have said they could pull out of the cabinet though they would not withdraw support for the government.
Source: DDNEWS