Decline to let us in free, possibly (6)

I believe the answer is:

refuse

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'decline' is the definition.
('refuse' can be a synonym of 'decline')

'us in free possibly' is the wordplay.
'in' means one lot of letters goes inside another.
'possibly' is an anagram indicator.
'free' with letters rearranged gives 'refe'.
'us' placed within 'refe' is 'REFUSE'.

'to let' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

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(Other definitions for refuse that I've seen before include "Decline to jump (a fence)" , "Pass up" , "Say no to - rubbish" , "Decline to jump; rubbish" , "Don't take the rubbish" .)

I've seen this clue in the Evening Standard.

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