Chennai, February 04 (ANI): Clearing the air on the issue of his successor, DMK chief M.K. Karunanidhi has said that he is 'happy' with reports suggesting his son, M.K. Stalin, could be the next party president. Meanwhile, Karunanidhi also criticized telecom minister Kapil Sibal s comment, regarding the recent Supreme Court verdict on 2G scam, that the central government merely followed the NDA s policy of first come first serve.