Are you suggesting James does not push the ball forward in offensive positions?
I think he can be effective when coming in off the right and this would allow a full back to overlap and also protect him defensively.
I dont think he can be effective through the middle because it is too congested for a player lacking in mobility and pace. Playing him as a no.10 also means we cant counter attack effectively. Hes not someone who will run past players and carry the ball upfield.
We also were massively overrun when he played as an attacking midfielder. Its very hard to get a foothold in matches when one of your central players in midfield doesn't offer anything off the ball. We struggled even worse when Iwobi played as a no.10. We were extremely easy to play against and couldn't attack at pace either. For me, the no.10 playmaker is an outdated position with no place in modern football.
If you like slow paced build up and passive possession football then James will be OK in a central attacking position. But if we want to get the ball forward quickly and remain balanced and solid, I think the right is his position. But in a 442 that position does not exist so I'm unsure where he fits in.
I personally would like to see us play 433 with him on the right in certain matches where we need a midfield 3.