I think they'll instead just give him a deal to work for the FBI in return of not getting arrested.
It actually happens quite a lot; they capture the big all knowing boss who will get to choose between prison time, or working for them to catch a whole bunch of criminals for them with the promise of getting released afterwards.
And of course they will never name any of the high profile people, because that's too dangerous, so they only name the minions or just people who worked for them only once or twice, because those people can't do shit against him or her.