Nice choice. I think it's a win-win for everyone:

1) Sarrazin will make experience as a team manager or similar. I don't understand if he will compete as well. In that case it's bingo
2) Huttunen will have full support both from Hyundai and from Sarrazin's squad. Also he can get valuable advise from a very very complete driver!
3) Hyundai will nurture a great talent with huge potential and also will develop its R5 (I guess).