There has been no talk within his party about joining a national government. Mano Ganeshan says in a tweet

Mr. Mano Ganesan states that his party is in alliance with the Samagi Jana Balawegaya and there has been no discussion within his party regarding joining a national government or the government.

Responding to the false news published by the media that his party will join a national government, he has pointed this out in a twitter message.