Not sure what you mean? If we sell them why would we need to sign a backup for james?
I'm not necessarily saying we buy a back up for James. I don't think that exists anyway as he's so unique.
James gives us options to which formation/s we play, as he can probably play either side in a 433, at the head of the middle 3 in a 433, centrally in a 4231, at the head of a diamond in a 442, or as a no 10 in a 4411 or 4213. He gives the manager options to pick the formation most suited to the opposition.
he can't play in a traditional 442 because he won't give you the defensive side needed, and nor should he for that matter. So we need players comfortable playing wide midfield or winger if you prefer. Also for when he plays a no 10 role or in a 4231, we'll also need wide men.
You can't get rid of all our players who are comfortable out wide and not replace them. It will so restrict the way we are able to play. Plus, as I said, we also need to be able to mix it up or change our system mid game when things aren't going to plan.
In my opinion, we need to bring in a new winger, preferably right sided but left footed, with more quality and pace than we currently have. I would also keep, for the time being, at least one of the others you mentioned, probably Bernard and also Gordon for cover..