I don’t know about you guys, but I always suspected that deal Bill made with (an unknowing) Gideon had to do with getting a body of his own (Perhaps he cannot truly access the whole of his powers without one?)- and who better a candidate than the already powerful psychic child who frequently leaves his own body unattended to dive into other people’s minds?
Luckily, seeing ghosts and all, Norman should be able to see the bodiless psychonaut, and the group would figure out a way to get his body back.
"Hey! When did YOU die?!"