Which will do nothing for the State charges he is about to face, which is why he was being transferred to a State institution.
The DOJ can investigate how and why Manafort is being charged with state crimes. I suspect the New York City Prosecutor Cyrus Vance will want he and his office to be the subject of a real investigation regarding its decision to attempt to prosecute Manafort.
The state charge against Manafort are going to be dropped. It's either that, or the feds will initiate an investigation regarding corruption in the office of the NYC prosecutors office; and they will find plenty of evidence.