Writer initially ignores Nottingham Forest (9)

I believe the answer is:

isherwood

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'writer' is the definition.
(I know that Isherwood is a writer)

'initially ignores nottingham forest' is the wordplay.
'initially' says to take the initial letters.
'nottingham' becomes 'sher' (I can't explain this - if you can you should believe this answer much more).
'forest' becomes 'wood' (synonyms).
The first letter of 'ignores' is 'i'.
'i'+'sher'+'wood'='ISHERWOOD'

Can you help me to learn more?

(Other definitions for isherwood that I've seen before include "Christopher --, novelist (Goodbye to Berlin)" , "Christopher ---, C20 novelist" , "Christopher --, novelist and dramatist" , "Playwright" , "Author" .)

I've seen this clue in The Telegraph.

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