I'd prefer Bielsa to be honest. Experienced manager, without being too old that he wouldn't be here for the long term. Lovely football and results from Athletic, and hopefully, he'd place an emphasis on local players.
If the players are fully ready to take on how he works, he is excellent, been following him since 2001. Bizarre, and a little sad that the english press is only just taking notice, simply because he beat United. Been excellent for at least a decade.