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' indicates an anagram (worry can mean to interfere with or disturb).
'about' is an insertion indicator.
'isnt' anagrammed gives 'ints'.
'end' put into '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" .)