Old supporter displaying common Russian name (4)

I believe the answer is:

oleg

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'common russian name' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'old supporter' is the wordplay.
'old' becomes 'o' (abbreviation).
'supporter' becomes 'leg' (eg support for a table).
'o'+'leg'='OLEG'

'displaying' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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