The United National Party (UNP) and Samagi Jana Balawegaya (SJB) are in talks to try and reunite under Sajith Premadasa’s leadership.
Former MP Harin Fernando said that a final agreement has not been reached.
Fernando told reporters that the general understanding is that the opposition must unite as one broad alliance to face the Parliament elections.
However, he said some are still looking at personal gain and not putting the country first.
Former Governor Naveen Dissanayake said that there is no objections in the UNP to forming an alliance with the SJB.
Former MP Dayasiri Jayasekera, who is with the SJB-led alliance, said that there had been talks between UNP Leader Ranil Wickremesinghe and SJB Leader Sajith Premadasa.
However, he said no final agreement had been reached.
Wickremesinghe has already indicated he will not contest at the next Parliament election and will also not enter Parliament through the National List.
The former President came third at the just concluded Presidential polls behind Anura Kumara Dissanayake and Sajith Premadasa.