They flip him, it could be John Dean all over.
I also don't think Flynn lied to Pence. I believe that he was fully authorized to make his overtures to Russia before Trump was prez. I also believe that Manafort and he had full knowledge of the Russia hacking efforts.
This is why Trump went to the wall over him with Comey.
And if you are right, Mueller will clear him unless you think he's going to make up a case?