Mid-field is the absolute lowest priority (ok, after goalkeepers). Diagouraga, Douglas, O'Conner, Forshaw, Reeves, Oyeleke is perfectly adequete for the central mid-field roles. Maybe there will be an injury here or there, but we can loan in if it gets that bad. I wouldn't suggest that it will though.
Two players in I would suspect, and we will probably use loans to fill in any gaps (whether season long or more likely, shorter deals).
Striker - Left back. I would be happy with this, just the two for now. LB is priority one.