Pitbull wrote:
Turn him into a wildlife center for rehabilitation.
A wild animal will never become a fully domesticated animal.
I don't know where you're from, but im certain that there's some sort of center that'll take him in.
Do not touch him too much, since he/she may carry disease, which can be dangerous if you already have a pet in the household. Seek a vet (exotic vets, they know more about rodents rather than a normal vet)
I worked at an animal shelter some years ago, where we got squirrels, random wild birds in etc. all the time.