Municipal Administration Minister S P Velumani said "for sure we have to unite," and to facilitate that "we are ready to hold talks."
Recalling the statement of late Chief Minister Jayalalithaa that her party would go on to work for the people even after her lifetime, he said it was the wish of all the party workers that the two-leaves symbol should be retrieved by both factions coming together.
"A panel led by R Vaithilingam has been set up and we are ready for talks," he said.
Assembly Deputy Speaker Pollachi V Jayaraman said, "For sure both the factions will come together, Amma's regime will continue to function successfully."
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He said his party will not allow the DMK to "come back in the reckoning again," and added that the main Opposition party was the "common enemy" of the people.
"Cadres are expecting (merger) talks like you all do, and it will happen and conclude cordially," Pollachi MP C Mahendran told reporters.
However in February this year, former Chief Minister Panneerselvam revolted against Sasikala, alleging that he was forced to make way for her to become the chief minister.
Subsequently, the AIADMK suffered a split, with some MPs and MLAs joining the Panneerselvam camp even as Chief Minister Palaniswami, a Sasikala loyalist, survived a confidence vote in the state Assembly in February.
Sasikala is serving a jail term in the Rs 66 crore disproportionate assets case in Bengaluru.
It has also sought a CBI probe into the circumstances leading to former Chief Minister Jayalalithaa's death on December 5 last year.
It had also demanded that 30 members of the Sasiskala family be formally expelled from the party.