Ooooh, will Mike Flynn be Trump's John Dean? Sing little birdie, sing!
Ginger I'm sure immunity deals take time to work out. One side has to be sure the info is worth granting immunity for (i.e. 'big' and provable), the other has to agree to terms. John Dean started working on his 'deal' in early April when he hired an attorney and began cooperating but it wasn't until late June that he began testifying after being granted immunity in exchange for pleading to one felony.
Interesting to note that Dean had previously asked Nixon for 'absolute immunity' and Nixon refused to grant it. Kinda makes you wonder if Flynn's asked for the same from Trump. And been refused.