I'm afraid it looks as though Brooks is out for a few weeks yet. I think the Yorkshire Post confirmed that neither Sidebottom or Plunkett will be available and the York press says the same about Sidebottom but is more hopeful about Plunkett.
Willey and Fisher both played some 2nd XI cricket against Notts so i'm not sure if the will be fit but from the article above it seems not.
If they aren't we will have Bresnan, Patterson, Rafiq. I would assume Coad and Shaw would be favourites for the other seamer positions having played the university match but there's always Rhodes. Assuming the worst of the injury situation I would go for.
Plunkett for Rhodes if fit.