Plans to stop in. Isnt going out (7)
I believe the answer is:
intends
'plans' is the definition.
(intending is a kind of planning)
'stop in isnt going out' is the wordplay.
'stop' becomes 'end' ('end' can be a synonym of 'stop'**).
'in' means one lot of letters goes inside another.
'going out' is an anagram indicator (out can mean wrong or inaccurate).
'isnt' is an anagram of 'ints'.
'end' placed into 'ints' is 'INTENDS'.
'to' is the link.
(Other definitions for intends that I've seen before include "Has as a purpose" , "Plans, means" , "Aims" .)