Expelled DMK leader MK Alagiri on Sunday trained guns at his brother and DMK chief MK Stalin claiming that Stalin can never become chief minister of Tamil Nadu. Alagiri, who was expelled from the DMK seven years ago after a bitter power tussle with Stalin, held discussions with his close associates and supporters in Madurai over his next course of political action. With Assembly elections in Tamil Nadu approaching, the former Union Minister's role is being speculated, from joining the BJP to floating his own outfit. He has asked his supporters to be prepared for any kind of move from him.