You CAN get a tattoo removed, but for his neck one... I think it would be unbearable even if it was possible.
Most tattoo artists wouldn't allow you to get it lasered off because not only would it hurt like hell, but for a tattoo that big it would take at least 20 sessions (if smaller ones on other parts of the body take around 10 sessions). I think the rule that tattoo artists won't tat you if you have no tats but want it on your neck is true. Pretty sure they would refuse you.
And as a I said before, nowadays, if you have a tattoo on the neck or above, you are only eligible for two jobs... modelling and being a tattoo artist yourself. So if you want a neck tat, don't do it unless you want to become a tattoo artist or are a professional model.