Well this is the point. If it's just the money then yes, it's not even a discussion, but if it seriously affects our chances of success for the season then to me it's a different matter. £200m in the bank won't score goals on the pitch. (It might get a couple I suppose if we stacked it up in the penalty area - a bit like Lukaku).
To your second point. If we'd planned for it earlier in the window and had a system change with a new signing or two ok, but throwing your plan for the season out of the window because you can't turn down an obscene amount of money doesn't seem right to me.
Third point. I don't want to see Nunez too far out wide, I'd like to give him a chance down the middle (ish).
Tbh we've still not found his best position, so a bit of experimentation would be good.