Asked whether he has told Merino he will be playing upfront again, Arteta said: "No, not him or other players. I want the players when they are on that pitch taking the initiative. We trained the last few weeks with different players. Merino has been one of them, with other players as well. We have [academy] players training with us now regularly, learning our system and getting very close. Obviously we might have to use them. They look ready, which is a good thing."