To be honest it's taken us a fair few years of experiments to find a position iwobi is decent enough in.I think he is another player not being used properly by Everton. He is not a lone striker. It’s not his game, he needs players around him. Iwobi improved when played in his best position. McNeill prefers to play centrally too.
Maupay is 27 soon we also don't have the luxury to experiment and he won't really improve now.
I don't see mcneil having the physicality and athleticism to work centrally.