Man readily available when husband is away (4)

I believe the answer is:

andy

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'man' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for andy that I've seen before include "Tabloid cartoon character" , "-- Capp, cartoon layabout" , "Andrew (dim.)" , "- Warhol, twentieth century US artist" , "strip cartoon character" .)

I've seen this clue in The Telegraph.

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