BritAnon's opinion: I trust Theresa May is on our side. The move is likely to take him into /ourguys/ protection or is just a lie to divert people's thinking as to his location.
And as for people wondering about the Podesta immunity, I'm certain that is immunity pertaining to that single case–he's nowhere near off any hook. However, if he admitted that Manafort was a DNC plant in court, he would receive immunity for any part in that ONE crime/case.
Likely an immunity offered by the Q team et al. to help put this piece in place.