I don't think we gave him the job because of youth; you don't hire a manager based on that philosophy and then recruit players in the 30+ age bracket.
The looming point deduction restricted us to those desperate for an opportunity to rebuild a career or get a chance at the PL level.
We probably also wanted someone who has survived in the PL before and is cheap.
Combine those elements, and you have a small list.
So available, cheap, PL experience and wanted the job.