I would say as many of them as we can, I know some have their boo boys (Cully being the main target).
Off your list Simon Ashton has already left the club, also find it interesting you would keep Stones but wouldn't keep Newsh, Davidson, Boyes or SWD
Players who will defo leave are Church (as he said either for full time footy or a full time job darn sarf), Pearson who will go to a L2/Conference club. Boyes has already said he wants full time next season and I'd guess Clarke is the same, whether they'll get it is another matter. Can't see Austin wanting to drop down to part time either.
Not sure but think Cully and Murphy's time is up at Loughborough too so they'll most likely be gone.
Surprised nobody wants to keep Haystead, before injury he was playing very well.
Edit: Ross Hannah from Matlock had a trial at Torquay I think it was earlier in the season and is attracting interest from higher up so doubtful We'd get him.