gave a paid speech to the propaganda network and had din we are vladimir putin. three sources familiar with the investigation tell nbc news mueller's applying renewed pressure on flynn following his indictment of trump campaign chairman paul manafort in june. former fbi director james comey testified under oath that president trump directed him to drop what was then the fbi's investigation into michael flynn. >> i hope this is the president speaking, i hope you can see your way clear to letting this goe to letting flynn go. he's a good guy. i hope you can let this go. now, those are his exact words. is that correct? >> correct. this is a president of the united states with me alone saying i hope this. i took it as this is what he wants me to do. >> nbc news reports if the elder flynn is willing to cooperate with investigators in order to help his son, two of the sources said it could also change his own fate. potentially limiting any legal consequences.