A pilot program from the Society for Information Management shows the value of taking on a protege from outside your own organisation.
Management | Mentoring - News, Features, and Slideshows
Tempting though it may be, you can't put off hiring young people forever. As IT budgets expand, the pressure on you to innovate increases while your current workforce ages and retires. Eventually, adding some energy, enthusiasm and newer skills from the entry-level talent pool will be critical to your business.
It's wrong to view leadership ability as something you have or you don't, say IT executives known for cultivating leaders among their staff. If a person has the potential to lead, a skillful CIO can recognize this, refine that potential through a set of carefully chosen experiences, and produce a strong leader.