Crossword Genius

Public Relations resented alteration for claimants (10)

Ross

I believe the answer is:

pretenders

I'm a little stuck... Click here to teach me more about this clue!

'claimants' is the definition.
(I know this)

'public relations resented alteration' is the wordplay.
I cannot really see how this works, but
'relations' could be 'tenders' (tender is a kind of relation) and 'tenders' is present in the answer.
The remaining letters 'pre' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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