A forceful, eccentric fan’s a rare find (4-4,6)

I believe the answer is:

four-leaf clover

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'a rare find' is the definition.
The definition suggests a singular noun which matches the answer.

'a forceful eccentric fan's' is the wordplay.
'eccentric' indicates an anagram.
'fan' becomes 'lover' (synonyms).
'a'+'forceful'='aforceful'
'aforceful' with letters rearranged gives 'fourleafc'.
'fourleafc'+'lover'='FOUR-LEAF CLOVER'

Can you help me to learn more?

(Another definition for four-leaf clover that I've seen is " Supposedly lucky plant".)

I've seen this clue in The Times.

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