Current squad size is 26 named professionals, plus 7 loans out & 6 loans in. So currently 33 with contracts.

Of the 33, the following 10 contracts are up in the summer:
Murphy, Wilson, Konopka
Coxe,Halford, Gunnarsson, Hoilett
Fred, Meite, Kennedy.

So we have 23 players contracted to 2019 & beyond which includes the following 10 whose futures will have question marks:
Matt Connolly, Kadeem Harris, Pilks, Damour, Mark Harris, Camp, Tomlin, O'Keefe, Bogle & Rhys Healey

I'd say the remaining 13 will all stay:
2019: Etheridge, Peltier, Bennett, Manga, Richards, NML
2020: Morrison, Bamba, Paterson, Ralls, Ward, Zohore,
2021: Madine

24 players have made 10 or more appearances, so we may well see a lot of players on their way out.