I could see Ross playing a deeper role in the future, but I'd imagine there would be a bit of rotation early on. I feel we need a CM, Winger, CB, and striker this summer -- assuming Barry stays.
Holtby
Carles Gil
Indi
Lukaku?
That would be a good summer for me.
EDIT : Also hoping Duelofeu stays too; if not, then I believe we will need another pacey, quick-footed player (who is "arrogant").