Maybe a VIP player can "reccomend" a non VIP manager to be national manager. For example, I'm one of the few Argentine VIPs. I like the idea that my NT has a manager, but now there are few good candidates (who speaks Spanish and knows all players) so I decided to be a candidate and I win (I was the only one). But it's a lot of responsibility for me. Before I could export the data in Excel, I did this work of comparing all the statistics, analyzing the opponent team, planning future, communicating with the manager to suggest trainings... is time consuming and I may not be the manager next season.
I understand that this option is only for VIP since it is not necessary to be a national manager to play the game, it's just something extra that generates no benefits and only provides entertainment, so I agree that someone must pay for it. But perhaps not all VIP players want to be NT manager and they can "transfer that privilege" to another who cann't pay (currently, payment methods in South America are not very convenient and I constantly get requests to increase the options available). If a VIP player do that, he can't be a candidate for a NT.