Regular payment allows further rental arrangements (7)

I believe the answer is:

sublets

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'further rental arrangements' is the definition.
Although both the answer and definition are plural nouns, I can't see how one could define the other.

'regular payment allows' is the wordplay.
'regular payment' becomes 'sub' (I have seen 'Advance payment ' mean 'sub' so perhaps 'payment' could also mean 'sub'. I am not sure about the 'regular' bit.).
'allows' becomes 'lets' ('let' can be a synonym of 'allow').
'sub'+'lets'='SUBLETS'

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