Crossword Genius

Screen fellow radical to pass traditionally incompetent chap (5,7)

Ross

I believe the answer is:

blind freddie

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'traditionally incompetent chap' is the definition.
The definition suggests a singular noun which matches the answer.

'screen fellow radical to pass' is the wordplay.
'screen' becomes 'blind' (synonyms).
'fellow radical' becomes 'freddie' (I can't justify this - if you can you should believe this answer much more).
'to pass' says to put letters next to each other.
'blind'+'freddie'='BLIND FREDDIE'

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I've seen this clue in the Sydney Morning Herald.
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