Robert Kirkland

 it is the man in the limo at the end of Red Dawn. His voice sounds the same as the man on the phone at the end of Season 4 when Wainwright is killed.  Notice how in episode 1 of this year they introduce Alexa Shultz, put her away for a few episodes, then bring her back for a throw back episode. Coincidence? Not likely. I just reviewed the first episode and notice how glib she is, how she seems to know that Jane is spinning a load of bullshit when he talks about a sign as a friend of RJ. She know's red john. Just because Heller has said that we might hace seen RJ, doesn't mean we have,but we probably have now and that man is Robert Kirkland.