A day after DMK chief M Karunanidhi made it clear that his younger son, M K Stalin, would be his successor, his elder son and union minister M K Alagiri indicated on Friday that he is set to oppose the decision. Speaking to reporters in Chennai, Alagiri said his father himself had remarked earlier that the DMK is not a mutt where the successor is chosen by the presiding pontiff. “He has said in the past that the DMK is not a mutt,” he said.