A tax haven ignored foolishly, bear a grudge (4,2,3,2,5)

I believe the answer is:

have an axe to grind

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'a tax haven ignored foolishly bear a grudge' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'bear a grudge' is the wordplay.
'bear' becomes 'have' (synonyms).
'a' becomes 'an'.
'grudge' becomes 'axe to grind' (I've seen this in another clue).
'have'+'an'+'axetogrind'='HAVE AN AXE TO GRIND'

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I've seen this clue in The Guardian.

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