Recruit them for a rotational assignment, if possible. It is a way for them to experience IT without making a long-term career decision. If necessary, go outside the company. Bring in an experienced executive to be second in command. Recruiting from the outside has some benefits and some risks.
New perspectives are always valuable.
New people see things differently, and that can be a real catalyst for change. The downside is the need to integrate that new person in the culture. That integration strategy isn't easy, but it's essential to the newcomer's ability to gain respect. Your efforts in implementing these actions will be of great benefit to your people and your organization. Make sure your own career plans are included.