A great deal in view (5)
I believe the answer is:
sight
I believe this is a double definition.
'a great deal' is the first definition.
('sight' can be a synonym of 'great deal')
'view' is the second definition.
('sight' can be a synonym of 'view')
'in' is the link.
(Other definitions for sight that I've seen before include "Vision, ability to see" , "Seeing" , "something ugly" , "Notice" , "Sense" .)