It's postponed when distracted (6)

I believe the answer is:

putoff

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'distracted' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'it's postponed' is the wordplay.
'it's' becomes 'put' (I can't explain this - if you can you should believe this answer much more).
'postponed' becomes 'off' (off can mean cancelled).
'put'+'off'='PUTOFF'

'when' is the link.

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I've seen this clue in The Daily Express.

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