The Kolkata Knight Riders coach John Buchanan said he was given free hand by the IPL franchise owner Shahrukh Khan to decide on the cricketing matters of the team.Buchanan says all the senior players like Australia's Ricky Ponting, Adam Gilchrist and India's Sachin Tendulkar, VVS Laxman and Rahul Dravid have reached their twilihgt. So also Sourav Ganguly."Shah Rukh Khan gave me a freehand to decide over cricketing matters of Kolkata Knight Riders. Ponting, Gilchrist, Sachin, Dravid, Laxman like Ganguly have reached their twilight.Buchanan also said he had informed the former Indian skipper about the move to have multiple captains for the KKR.He dismissed criticism that he is pursuing his own agenda for the IPL team and said he was committed to the IPL team's success and would do whatever required for that."I informed him last season about captaincy options. I don't want to remove Ganguly. Rather, I want Kolkata knight riders to win the tournament," said Buchanan on Friday.