We probably said the same about Denilson, Lupoli, Quincy, etc.
January or when the Capital One campaign is over, whichever is earlier. Wouldn't send him too far from London. Must be quite a culturally difficult thing for a foreign lad to go up north or the midlands at that age.
mind you, I do remember Zelalem being equally impressive in pre season a couple of years ago and he's not really figured since