Problem with persevering with richarlison at 9 it means son plays as a winger which he isn’t suited to. Stick with son at 9 and play Solomon/perisic on left and kulu/Johnson on right. I like richarlison but for me he has to bide his time again and when the opportunity arises he needs to take his chance which he didn’t do in the first three games.I'd start him against Sheffield United. Ideally I would persevere with him as a 9. Don't think he's played badly at all, occupies defenders, makes good runs and creates space for others (which is exactly what the 9 is meant to do in Ange's system). Needs a league goal, and he'll be fine.