We will need 5 or 6 players to come into the first team as starters.
I'd get Krul back and keep Darlow and let them fight to be first choice, Yedlin will be good enough at right back, Clark will do a job in the middle of our defence and Lascelles as back-up. Shelvey, Hayden and Ritchie are good enough in their positions. I don't know about Lazaar as he hasn't played anywhere near enough games to know one way or the other. Gayle will be OK but I would like somebody better up front. Aarons will have to find some fitness if he's going to stay, he looks good enough but his reliability due to fitness is a problem. Perez did a good enough job in the Premiership to be at least back-up and I hope that we sign Atsu. Dummett can stay as back-up.
The players I'd bin from the squad are Sels either on loan or sold, I would get rid of Elliot, Colback, Diame, Mitrovic, Hanley, Anita, Gouffran, Haidara, Mbemba if Rafa doesn't want to play him, Gamez because of his age, Sammy, Murphy, Riviere if we can find somebody to take him, De Jong and Saivet.
If De Jong can stay fit and thats a big if, i'd keep him.