"Let's release the transcript". Sorry, Trump gets to decide that. So wish all you want, because unless he pulls an Obama and says something on an open mic, you don't get to hear the president's conversations with foreign leaders.
Trump has NO legal basis to have ANYTHING to do with a whistle blower complaint that is about HIM
A President's private conversation with a foreign leader is not readily divulged, unless you're Obama and you have it on an open mic. And yes, sometimes executive privilege really does mean all you get to do is complain about stuff you don't get to see or hear.