Imran khan should ask for the change of leader of the opposition. If ppp is sincere to alliance with PTI against corruption then leader of the opposition should be given to PTI.If ppp refuses to do so then PTI should not trust them as they can back out any time from the alliance. PPP is trying for the release of Dr Asim and Ayan Ali nothing more or less. PTI is struggling against corruption. I don't think they can go together