Unknown Scandinavian tackles international footballing legend (6)

I believe the answer is:

zidane

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'footballing legend' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'unknown scandinavian tackles international' is the wordplay.
'unknown' becomes 'z' (algebra).
'scandinavian' becomes 'dane' (person from Denmark).
'tackles' is an insertion indicator (tackle can mean to intercept or surround).
'international' becomes 'i' (abbreviation eg in IMF).
'z'+'dane'='zdane'
'zdane' going around 'i' is 'ZIDANE'.

Can you help me to learn more?

(Another definition for zidane that I've seen is " French Real Madrid star".)

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