Means to get close: isn't worried about (7)
I believe the answer is:
intends
'means' is the definition.
('intend' can be a synonym of 'mean')
'close isn't worried about' is the wordplay.
'close' becomes 'end' (close can mean to end or finish).
'worried' is an anagram indicator (worry can mean to interfere with or disturb).
'about' is an insertion indicator.
'isnt' is an anagram of 'ints'.
'end' inserted inside 'ints' is 'INTENDS'.
'to get' acts as a link.
(Other definitions for intends that I've seen before include "Plans, means" , "Has as a purpose" , "Aims" .)