Himself, Berrada, Jim, Brailsford and Blanc set up a Whatsapp group where they discuss who they feel is the best candidate for Head of Recruitment and any other roles they feel need filling or replacing. Then he lets the team in place do their jobs just as he would be doing if he was at the club.
In the meantime, the board send him an outline of their deep dive into the current structures and organisation of the club, and he can spend the next however many months planning how he wants to reshape it, all the while staying in contact with Berrada and whoever they hire as each of their number 2's to ensure things are being put into place in his absence.
This is a marathon not a sprint, and there will be plenty to keep him busy with while Newcastle foot the bill.