Frenchman I leave to get Anglicised (5)

I believe the answer is:

alain

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'get anglicised' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'frenchman i leave' is the wordplay.
'frenchman' becomes 'nial' (I can't justify this - if you can you should believe this answer much more).
'i' becomes 'a'.
'leave' is a reversal indicator (I've seen 'left' mean this).
'nial'+'a'='niala'
'niala' back-to-front is 'ALAIN'.

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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