Concern about handle in case (9)
I believe the answer is:
'case' is the definition.
(I have seen 'case of bullets' mean 'cartouche' so perhaps 'case' could also mean 'cartouche')
'concern about handle' is the wordplay.
'concern' becomes 'care' (synonyms).
'about' is an insertion indicator.
'handle' becomes 'touch' (touch can mean to feel or handle).
'care' enclosing 'touch' is 'CARTOUCHE'.
'in' acts as a link.
(Other definitions for cartouche that I've seen before include "ornamental piece of architecture" , "Ornate frame around an inscription" , "Panel" , "Tablet in scroll form" , "case of bullets" .)