Foyth, Sissoko, Gazzaniga, Rose, Carter Vickers can all be sold for me, although it's a bid sad with Foyth, as there's definitely a baller in there. Just too prone to silly Chiriches-like mistakes.
Loans for the rest of the fringe players like Sessegnon and Clarke.
Ideally I wouldn't mind us getting upgrades on Winks, Lucas and Dier as well, but you can't do it all in one window, and I'm more than happy to have those guys as squad players.
Aurier is one that I'd actually like to see us keep, as long as he's happy playing second fiddle to Doherty.
I personally wouldn't dream of selling Lamela or Alli. Lamela just for his never say die attitude and overall skill set, he's not a starting XI player, but he's definitely up there as our top 15 most useful players, in my opinion (as long as he's fit, obviously).
Alli, well, it would be madness to sell him, unless he wants to leave (in which case, it could be argued that selling him now would be wise). Perhaps a bit of a bold statement, but a confident Alli is one of the best players in the world, in my opinion. Insane talent.